dydrogesterone – from menarche to menopause
Transcription
dydrogesterone – from menarche to menopause
DYDROGESTERONE – FROM MENARCHE TO MENOPAUSE F GUIDOZZI University of Witwatersrand Faculty of Health Sciences DYDROGESTERONE Classification Threatened abortion Recurrent abortion Menstrual irregularities Luteal phase support in IVF Endometriosis Postmenopausal hormone therapy Classification of Progestogens Progesterone Retroprogesterone Progesterone Dydrogesterone Progesterone Derivatives 17-OH-progesterone Derivates Pregnane • Hydroxyprogesterone caproate • Hydroxyprogesterone heptanoate • Gestonorone caproate • Chlormadinone acetate • Medrogestone • Medroxyprogesterone acetate • Cyproterone acetate 19-progesterone Derivatives Nor-Pregnane • Nomegestrole acetate • Demegestone • Promegestone • Nestorone • Trimegestone Testosterone Derivatives 19-nortestosterone Derivatives Estranes • Lynestrenol • Levonorgestrel • Norethisterone • Norethisterone acetate • Ethinodiol aiacetate • Norgestrienone • Dienogest Gonanes • Norgestrel • Desogestrel • Gestodene • Norgestimate Spirolactone Derivative Drospirenone Adapted from: Druckmann R. Journal Für Menopause. 2002;1–5. 3 Dydrogesterone Dydrogesterone is a retroprogesterone – a steroisomer of progesterone – with an additional double-bond between carbon 6 CH3 &7 CH3 CH3 CH3 C O CH3 CH3 H O H O Kuhl 2006 4 C O Progestogens have different hormonal activities Dydrogesterone Progesterone Medroxy Medrogestone progesterone acetate Norethisterone Levonorgestrel Progestogenic + + + + + + Oestrogenic – – – – + – Androgenic – – (+) – + + Glucocorticoid ? + + ? – – Antiandrogenic – (+) – – – – Antioestrogenic + + + + + + (+) + – – – – Antimineralocorticoid + = effect – = no effect ? = unknown (+) = weak effect Kuhl 2005 5 Dydrogesterone First marketed in 19611 The only retroprogesterone commercially available1 Molecular structure closely related to natural progesterone Orally active at lower doses than micronised progesterone2 No oestrogenic, androgenic or glucocorticoid effects DYDROGESTERONE Compared with oral micronised progesterone – Has a more rigid structure (positively influences selectivity) – Better oral bioavailability – Requires a 10 – 20 times lower oral dose – Has good receptor binding selectivity – Has metabolites with progestogenic activity Schindler 2009 7 Dydrogesterone: Safety and Tolerability Possible undesirable effects Common (≥1/100, <1/10) Uncommon (≥ 1/1,000, < 1/100) Rare (≥ 1/10,000, <1/1,000) Migraines/headache Depressed mood Increase in size of progestogen dependent neoplasms Nausea Dizziness Hemolytic anemia Menstrual disorders (e.g. metrorrhagia, menorrhagia, oligo/amenorrhea, dysmenorrhea and irregular menstruation) Vomiting Hypersensitivity Breast pain/tenderness Weight increase Somnolence Abnormal hepatic function (with jaundice, asthenia or malaise, and abdominal pain) Angioedema Allergic dermatitis (e.g. rash, pruritus, urticaria) Edema Dydrogesterone SmPC. 29 April 2011. Breast swelling Safety and Tolerability Interaction with other medications In vitro data indicate that dydrogesterone and its main metabolite 20 α –dihydrodydrogesterone (DHD) may be metabolized by cytochromes P 450 Metabolism may be increased by concomitant use of substances known to induce these isoenzymes such as anticonvulsants (e.g., phenobarbital, phenytoin, carbamazepine), anti-infectives (e.g. rifampicin, rifabutin, nevirapine, efavirenz) and herbal preparations containing e.g. St John’s Wort (Hypericum perforatum), valerian root, sage, or gingko biloba . Safety and Tolerability Ritonavir and nelfinavir, although known as strong cytochrome enzyme inhibitors, by contrast exhibit enzyme-inducing properties when used concomitantly with steroid hormones Increased metabolism may lead to a decreased effect In vitro studies have shown that dydrogesterone does not inhibit or induce CYP drug metabolizing enzymes at clinically relevant concentrations INDICATIONS FOR USE Dysmenorrhoea Threatened abortion Recurrent abortion Luteal phase support in IVF Menstrual irregularities Secondary Amenorrhoea Dysfunctional uterine bleeding Endometriosis Menopausal hormonal therapy Importance of progesterone for implantation and pregnancy development Preparation of endometrium for implantation (secretory changes) Endometrial decidualisation Production of endometrial proteins (e.g. uteroglobin) Regulation of cellular immunity Stimulation of prostaglandin E2 production Stimulation of lymphocyte proliferation at foeto-maternal interface Suppression of cellular cytotoxicity from increased interleukin-2 Suppression of T-cell and killer-cell activity Shift from T-helper (Th)1 to Th2 cells Synthesis of progesterone-induced blocking factor (PIBF) Suppression of matrix metalloproteinases Schindler 2004 12 Dydrogesterone Indications and Dosing Relating to Pregnancy Progesterone deficiencies • Treatment of threatened miscarriage • Treatment of habitual miscarriage • Luteal phase support in IVF . Dydrogesterone SmPC. 29 April 2011. Dydrogesterone in threatened abortion: pregnancy outcome J Steroid Biochem Mol Biol 2005; 97: 421-425 Omar MH, Mashita MK, Lim PS, Jamil MA 14 Omar 2005 - Dydrogesterone in Threatened Abortion: Pregnancy Outcome Design 16 Registration records of 154 (gestational age <13 weeks) presenting with vaginal bleeding were evaluated 12 Miscarriage rate (%) 10 Dydrogesterone 40 mg at once plus 10 mg b.i.d. until bleeding stopped,bed rest and received folic acid Control group: bed rest and folic acid only Women followed up until 20 weeks gestation Malaysia 13.8 14 8 6 4.1 4 2 0 Dydrogesterone-treated group (n = 74) Control group (n= 80) *p = 0.037 Odds ratio: 3.773, 95% CI: 1.009 – 14.108 Dydrogesterone had a significantly lower miscarriage rate compared with the control group (4.1% vs. 13.8%, P=0.037) Adapted from: Omar MH, et al. J Steroid Biochem Mol Biol 2005; 97(5): 421-425. Dydrogesterone support in threatened miscarriage Maturitas 2009; 65S: S43-S46 El-Zibdeh MY & Yousef LT 16 El-Zibdeh 2009 - Dydrogesterone Support in Threatened Miscarriage Design 30 • 146 women with vaginal bleeding during the first trimester randomized Control All women received standard supportive care: iron, folic acid, multivitamin supplements and recommended bed rest Jordan Adapted from: El-Zibdeh MY, Yousef LT. Maturitas 2009; 65(Suppl 1): S43-S46. 20 Miscarriage rate (%) Oral dydrogesterone 10 mg b.i.d. until one week after bleeding stopped 25 25 17.5 15 10 5 0 Dydrogesterone-treated group (n = 86) Control group (n= 60) *p < 0.05 vs. control Dydrogesterone had a significantly lower miscarriage rate compared with the control group (17.5% vs. 25%, P<0.05) El-Zibdeh 2009 - Significantly Lower Miscarriage Rate with Dydrogesterone Results Dydrogesterone group experienced a significantly lower miscarriage rate compared with the control group (17.5% vs. 25%, p<0.05) No significant differences between the dydrogesterone and control groups in incidence of Pre-eclampsia (9.8% and 6.6%) Intra-uterine growth retardation (7.0% and 8.8%) Ante-partum hemorrhage (5.6% and 6.6%) Pre-term labor (8.4% and 11.1%) Congenital abnormalities (2.8% and 4.4%) No adverse events reported during treatment with dydrogesterone El-Zibdeh MY, Yousef LT. Maturitas 2009; 65(Suppl 1): S43-S46. Conclusion The miscarriage rate was lower in the dydrogesterone group than in the control group Dydrogesterone was well tolerated and had no unwanted effects on pregnancy outcome No placebo group Basic randomisation method and allocation performed by physician Further large randomized trials are needed to establish the role of dydrogesterone and to evaluate the impact of hormonal levels in first trimester threatened miscarriage El-Zibdeh & Yousef 2009 Dydrogesterone in threatened miscarriage: a Malaysian experience Maturitas 2009; 65S: S47-S50 Pandian RU Pandian 2009 Objectives and methods To determine whether dydrogesterone more effective than conservative management in women with threatened miscarriage Open, randomised study in Malaysia 191 women with vaginal bleeding up to 16 weeks of pregnancy randomised to: – Oral dydrogesterone 40 mg at once followed by 10 mg twice a day until week 16 – Control group: Conservative management with bed rest only Women in dydrogesterone group not recommended bed rest No placebo group, basic randomisation method Study not blinded to either physician or patient Pandian 2009 Pandian 2009 - Dydrogesterone in Threatened Miscarriage: a Malaysian experience Design Prospective, randomized, controlled, open (blinded data analyses) study, n=191 Study not blinded to either physician or patient • Malaysia 25 20 Miscarriage rate (%) Dydrogesterone 40 mg at once followed by 10 mg twice a day until week 16 Control group: Conservative management with bed rest only 28.4 30 15 12.5 10 5 0 Dydrogesterone-treated group (n = 96) Control group (n= 95) *p < 0.05 vs. control Odds ratio: 0.36, 95% CI: 0.17 – 0.75 Pandian RU. Maturitas 2009; 65(Suppl 1): S47-S50. Pandian 2009 – Outcome and Obstetric Complications Dydrogesterone group experienced a significantly lower miscarriage rate compared with the control group (12.5 % vs. 28.4%; p<0.05) Control (n=96) Dydrogesterone p-value (n=95) Caesarean section 13 12 NS Placenta previa (> 28 weeks) 3 4 NS Preterm labor (28–36 weeks) 6 4 NS Antepartum hemorrhage 4 6 NS Pregnancy-induced hypertension 12 14 NS Intrauterine death/congenital abnormality 0 0 NS Low birth weight (< 2,500 g) 3 2 NS Pandian RU. Maturitas. 2009; 65(Suppl 1): S47-S50. Conclusion The miscarriage rate was lower in the dydrogesterone group than in the control group No babies born with congenital abnormalities and no intrauterine deaths Large-scale, double-blind, randomized, controlled trials are essential to confirm these initial findings Pandian 2009 Dydrogesterone in the reduction of recurrent abortion J Steroid Biochem Mol Biol 2005; 97: 431-434 El-Zibdeh MY El-Zibdeh 2005 25 El-Zibdeh 2005 - Dydrogesterone in the Reduction of Recurrent Spontaneous Abortion Design Randomized, controlled study Oral dydrogesterone 10 mg b.i.d. Intramuscular HCG 5000 IU every 4 days No additional treatment Treatment started after confirmation of pregnancy and continued until 12th week Adapted from: El-Zibdeh MY. J Steroid Biochem Mol Biol 2005; 97(5): 431-434. 29 30 25 Miscarriage rate (%) 180 pregnant women (<35 years old) with at least 3 previous unexplained consecutive miscarriages with the same partner randomized 35 20 15 * 18 13 10 5 0 * p = 0.028 vs control Dydrogesterone had a significantly lower miscarriage rate compared with the control group (13.4% vs. 29%, p=0.028) Dydrogesterone use during pregnancy: overview of birth defects reported since 1977 Early Hum Dev 2009; 85: 375-377 Queisser-Luft A Queisser-Luft 2009 27 Exposure Between 1977 and 2005: Based on sales figures, around 38 million women treated with dydrogesterone Foetuses exposed to dydrogesterone in utero in more than 10 million pregnancies Queisser-Luft 2009 28 Results 28 Reported birth defects – 19 Malformations: musculoskeletal system, neural tube defects, multiple defects, heart, facial clefts, eye, gastrointestinal system, urogenital system – 4 Abnormalities: myopia/amblyopia/refraction disorder, hearing disorder, ovarian cyst, non-immune hydrops – 3 Masculinisation: hermaphroditism, enlarged clitoris (2) – 1 Embryonic tumour: adrenal neuroblastoma – 1 Behavioural deviation: borderline personality disorder 29 Queisser-Luft 2009 Results Threatened or recurrent miscarriage as the indication for dydrogesterone treatment in 18 of 28 cases: 79% of cases exposed during the first trimester 54% of cases exposed to concomitant medications Types of concomitant medications varied, but none recognized as potentially teratogenic Daily dosage mostly 10 – 30 mg Queisser-Luft 2009 30 Conclusion Low number of birth defects reported No pattern of abnormalities with evaluation of individual case reports However, limitations of pharmacovigilance must be acknowledged. Robust malformation rates cannot be determined based on case reports 31 Queisser-Luft 2009 Dydrogesterone: safety and tolerability Pregnancy It is estimated that more than 10 million pregnancies have been exposed to dydrogesterone. So far there were no indications of a harmful effect of dydrogesterone use during pregnancy. Some progestogens have been reported in the literature to be associated with an increased risk of hypospadias. However due to confounding factors during pregnancy, no definitive conclusion can be drawn regarding the contribution of progestogens to hypospadias. 32 SAFETY AND TOLERABILITY IN PREGNANCY Clinical studies, with limited number of women treated with dydrogesterone early in pregnancy, have not shown increase in risk. No other epidemiological data available Effects in non-clinical embryo-fetal and post-natal development studies were in line with the pharmacological profile. Untoward effects occurred only at exposures which exceeded the maximum human exposure considerably Dydrogesterone can be used during pregnancy if clearly indicated. Safety and tolerability Breastfeeding – No data exist on excretion of dydrogesterone in milk. Experience with other progestogens indicates that progestogens and the metabolites pass to mother’s milk in small quantities. Whether there is a risk to the child is not known. Therefore, dydrogesterone should not be used duringthe lactation period. Fertility – There is no evidence that dydrogesterone decreases fertility at therapeutic dose. 34 Comparing Three Systematic Reviews of Progestogens in Threatened Miscarriage Progestogen for Treating Threatened Miscarriage Wahabi 20071 Progesterone and Dydrogesterone Wahabi 20112 Data set: Intravaginal progesterone: 2 studies (n=84) Dydrogesterone: no studies Data set Data set: Intravaginal progesterone: 2 Dydrogesterone: 5 studies studies (n=84) (n=660) Dydrogesterone: 2 studies (ElZibdeh, Pandian)3,4 (n=337) Main results: Main results Main results: No effectiveness for vaginal progesterone compared to placebo in reducing risk of miscarriage Evidence of a significant reduction of spontaneous miscarriage by progestogens vs. placebo no treatment of 0.53 (CI = 0.35 to 0.79) Statistically significant reduction with dydrogesterone in the odds ratio for miscarriage compared to standard care of 0.47 (CI = 0.31–0.7) 1. Wahabi HA, et al. Cochrane Database Syst Rev 2007 Jul 18; (3): CD005943. 2. Wahabi HA, et al. Cochrane Database Syst Rev 2011 Dec 7; (12): CD005943. 3. El-Zibdeh MY, Yousef LT. Maturitas 2009; 65(Suppl 1): S43-S46. 4. Pandian RU. Maturitas. 2009; 65(Suppl 1): S47-S50. 5. Carp H. Gynecol Endocrinol 2012; 28(12): 983-990. Dydrogesterone Alone Carp 20125 Clinical Outcomes in Threatened Miscarriage Dydrogesterone Is More Effective Than Standard Care Omar 2005 Dydrogesterone showed a significantly higher continuing pregnancy success rate (95.9% vs. 86.3%; p = 0.037 )1 El-Zibdeh 2009 Dydrogesterone showed a significantly lower miscarriage rate (17.5% vs. 25%; p < 0.05)2 Pandian 2009 Dydrogesterone showed a significantly higher successful delivery rate (87.5% vs. 71.6%; p < 0.05)3 Dydrogesterone Is as effective as Micronized Progesterone Czajkowski 2007 Dydrogesterone (30 mg/day for 6 weeks) had a miscarriage rate of 8.3% compared to 13.8% with vaginal micronized progesterone (300 mg/day for 6 weeks) in a study to evaluate spiral artery pulsatility & resistance index (difference not significant)4 Pelinescu-Onciul 2007 Dydrogesterone (40 mg/day until 16th week) had a miscarriage rate of 7% compared to a rate of 18.7% obtained in a previous study in women with treated with micronized progesterone (significance in difference not determined)5 1. Omar MH, et al. J Steroid Biochem Mol Biol 2005; 97(5): 421-425. 2. El-Zibdeh MY, Yousef LT. Maturitas 2009; 65(Suppl 1): S43-S46. 3. Pandian RU. Maturitas 2009; 65(Suppl 1): S47-S50. 4. Czajkowski K, et al. Fertil Steril 2007; 87(3): 613-618. 5. Pelinescu-Onciul D. Gynecol Endocrinol 2007; 23(Suppl.1): 77-81. SYSTEMATIC REVIEW OF DYDROGESTERONE FOR TREATMENT OF THREATENED ABORTION 21 REPORTS 1380 PATIENTS 5 RANDOMIZED STUDIES 47% significant reduction in odds for miscarriage . H Carp . GYNECOLOGICAL ENDOCRINOLOGY 2012 2012 United Kingdom NICE Guidelines Progesterone/progestogen for threatened miscarriage Approximately 20% of pregnancies miscarry in the first trimester and many women will experience some bleeding and/or pain in early pregnancy that does not cause miscarriage. In many countries, women with bleeding and/or pain will be treated with progesterone or progestogens to try and decrease the risk of miscarriage. The evidence for the effectiveness of this treatment has been inconclusive, but data from a meta-analysis of several small studies suggest that progestogens are better than placebo. However, there are theoretical risks to prescribing any treatment in pregnancy and for many practitioners this will be a major change in practice. The lack of strong evidence makes this a priority area for research. National Institute for Health and Care Excellence (NICE) clinical guideline 154. December 2012. http://guidance.nice.org.uk/cg154 (last accessed March 2014). 2013 Australian and New Zealand Guidelines Recommendation For women presenting with a clinical diagnosis of threatened miscarriage, there is now preliminary evidence of a reduction in the rate of spontaneous miscarriage with the use of progestins. Grade and Reference Consensus-based recommendation Reference: Wahabi 2011 This conclusion is based on data from four RCTs including 411 women. Miscarriage was significantly less likely to occur on progestins than placebo or no treatment (risk ratio 0.53; 95% CI 0.35 to 0.79), with no evidence of increase in the rate of antepartum hemorrhage, pregnancy-induced hypertension, or congenital abnormalities. Again, there was clinical heterogeneity in these trials, with two reporting on the use of oral dydrogesterone and two reporting on vaginal progesterone. The evidence suggesting benefit of progestins for women with recurrent miscarriage and now, particularly, for women with threatened miscarriage, remains preliminary and additional well designed studies are required to confirm these findings. Royal Australian and New Zealand College of Obstetricians and Gynaecologists (RANZCOG) 2013. http://www.ranzcog.edu.au/doc/progesterone-support-of-the-luteal-phase-and-early-pregnancy.html (Last accessed March 2014). Cochrane Systematic Review of Progestogens in Miscarriage Progesterone and Dydrogesterone Haas & Ramsey 2013 Data set 14 trials (n=2158) regardless of gravidity or previous miscarriages Main results No evidence of reduction of miscarriage by progestogen No evidence of reduction by route of administration (oral, vaginal, intramuscular) Subgroup analysis of 4 trials (225) in recurrent miscarriages (3+) compared to placebo or no treatment progestogen treatment showed a statistically significant decrease in miscarriage rate (Peto OR 0.39; 95% CI 0.21 to 0.72) but poor methodological quality (2 dydrogesterone studies) Haas DM, Ramsey PS. Cochrane Database Syst Rev 2013 Oct 31; 10: CD003511. Luteal Phase support in IVF CHAKRAVARTY et al. J Steroid Bio Mol Bio 2005 430 IVF women Randomized to oral dydrogesterone vs vaginal micronized progesterone Luteal phase support from embryo transfer 12 weeks No difference in outcome More women were satisfied with dydrogesterone with view to tolerability DYDROGESTERONE IN LUTEAL INSUFFICIENCY Luteal phase is defined as the period from occurrence of ovulation until the establishment of a pregnancy or the resumption of menses 2 weeks later1 luteal phase 1. Ghanem ME, Al-Boghdady LA. Luteal Phase Support in ART: An Update. Available from: http://cdn.intechopen.com/pdfs/41085/InTech-Luteal_phase_support_in_art_an_update.pdf (last accessed February 2014). 2. Schindler AE. Gynecol Endocrinol 2004; 18(1): 51-57. Figure adapted from: Schindler AE. Gynecol Endocrinol 2004; 18(1): 51-57. Luteal Phase Defect Luteal Phase Defect is a Corpus luteum with inadequate progesterone secretion Characterized by: Short luteal phase interval (<12 days between ovulation and menses) A normal-length luteal phase with inadequate progesterone production Or inadequate endometrial response to otherwise normal progesterone concentrations Luteal phase defect may occur sporadically in fertile women e.g. in teenagers post menarche, during stress or strenuous exercise Miller, P, Soules, M, Glob libr Women's Med (ISSN: 1756-2228) 2009; DOI10.3843/GLOWM.10327. Dydrogesterone for Luteal Phase Insufficiency Dosages, treatment schedule and duration of treatment may be adapted to severity of dysfunction and clinical response. Infertility due to luteal insufficiency: 10 or 20 mg dydrogesterone daily starting with the second half of the menstrual cycle until the first day of the next cycle. Treatment should be maintained for at least three consecutive cycles . Luteal Phase Defect Regulation of Menstrual Cycle with Dydrogesterone Dydrogesterone to treat teenagers with defective luteal phase suffering from menorrhagia, oligomenorrhea or polymenorrhea 40% Menstrual cycle normalization Subjects: N=50, age 16-19yrs Menorrhagia n=39 30% Oligomenorrhea n=8 20% Polymenorrhea n=3 Treatment: 10 mg/day, day 11-25 of cycle 10% Treatment duration: 6 cycles 0% In cycles 1-3 In cycle 4 In cycle 5 In cycle 6 Curettage Menstruation was regulated in 96% after 6 cycles Adapted from: Dutta DK. Asian J Ob Gyn 2001; 5(2): 3-5. Comparison of dydrogesterone and progesterone in irregular dysfunctional uterine bleeding Randomised controlled study in Turkey 69 Women with DUB Treated with oral dydrogesterone (20 mg/day for 10 days starting on day 15) or vaginal progesterone (90 mg alternate days from day 17 – 27) for 3 months. Improvements in menstrual cycle characteristics and endometrial histology similar in both groups. No adverse events with dydrogesterone reported. Growing pain and weight gain reported with progesterone. Karakus et al 2009 Aust N Z J Obstet Gynaecol Comparison of dydrogesterone and progesterone in irregular dysfunctional uterine bleeding Karakus et al 2009 47 Double-blind, placebo-controlled study of dydrogesterone in secondary amenorrhoea Double-blind, randomised, placebo-controlled study 104 Premenopausal women with secondary amenorrhoea or oligomenorrhoea and normal oestrogen Treated with dydrogesterone (10 mg/day) for 14 days and placebo on the other 14 days each cycle, or placebo alone, for 6 cycles Occurrence of withdrawal bleeding during the first cycle: significantly higher with dydrogesterone than placebo (65% vs. 31%, p = 0.0004) Regularity of withdrawal bleeding significantly better with dydrogesterone Dydrogesterone well tolerated. Adverse events in 12 women on dydrogesterone and 13 on placebo 10 or 20 mg daily for 14 days during the second half of the cycle to produce optimum secretory transformation of an endometrium adequately primed with oestrogen Panay et al 2007 Treatment Algorithm for Endometriosis Chronic pelvic pain and endometriosis in young women Functional disorder Dietary changes, GI referral Physical therapy, trigger points Psychological evaluation • IBS • Pelvic floor myalgia • Depression ENDOMETRIOSIS Chronic pelvic pain • Detailed history • Examination • Imaging Alternative diagnoses • Adnexal cyst • Chronic appendicitis • IBD Medical management presumptive diagnosis NSAIDs OCs GnRH agonists + add-back Progestins Danazol Solnik J. Curr Opin Obstet Gynecol 2006; 18: 511–518 . Conservative surgery Surgical diagnosis Surgical therapy Other diagnosis Treatment of Endometriosis with Progestogens ESHRE recommends Use of progestogens or anti-progestogens as one option to reduce endometriosis-associated pain Side-effect profiles should be taken into account especially irreversible side effects (e.g. thrombosis, androgenic effects) Consider prescribing a levonorgestrel-releasing intrauterine system as one option to reduce endometriosisassociated pain ESHRE: European Society of Human Reproduction and Embryology Dunselman GAJ et al. Hum Reprod. 2014 Mar;29(3):400–12. Mechanism of Action of Progestogens Progestogens have a therapeutic action in women with endometriosis by acting at different levels:1 They have an anti-gonadotropic effect and therefore inhibit the ovarian function thus creating a stable hypoestrogenic environment1 (not dydrogesterone at approved doses*)2 They reduce peritoneal inflammation1 1. Streuli I, et al, Expert Opin Pharmacother..2013; 14(3): 291–305 2. Schindler AE. Maturitas 2009; 65S: S3–S11. 3. Dydrogesterone Summary of Product Characteristics. 29 April 2011. Management of Endometriosis Baseline controlled studies in patients with surgically confirmed endo Entered / Completed Author (year) Johnston WI, 19761 49 Dydrogesterone Treatment Results Adverse events (n) 5 mg BID (10 mg/d) 9 months Symptoms (n=45): 89% symptom-free Culdopscopy (n=32): 66% on signs Transient mastalgia (1), dizziness (1) Walker SM, 19832 14/10 10 mg TID (30 mg/d) on day 5 to 25 6 months Symptoms: 60% showed improvement in pelvic pain pain scores Laparoscopy (n=9): 56% showed improvement Breast tenderness (3), increased breast size (4), edema (1), hirsutism (1) Cornillie FJ, et al. 19873 18/18 20 mg/d (n=14) 2-5 months 60 mg/d (n=4) 2 months Laparoscopy: 30% showed significant improvement, 61% showed some improvement None stated Kaiser E, Wagner ThA. 19894 20 10 mg/d day 5 to 15 and 20 mg/d day 16 to 25 of each cycle 6 months or longer Symptoms: 30% elimination, 60% improvement Laparoscopy: 75% elimination, 20% improvement Mainly nervousness or weight gain (11) Trivedi P et al. 20075 98/90 10 or 20 mg/d day 5 to 25 3-6 months Symptoms: 21% symptom-free, 67% showed improvement. Pelvic pain, dysmenorrhea, dysparunia improved after 1 month (p<0.05) None reported Dosing 10 or 30 mg/day from day 5 to 25 of the cycle or continuously6 1. Johnston WI. Br J Gynaecol 1976; 77–80; 2. Walker SM. Br J Clin Practice 1983; 24(Suppl.):40– 46; 3. Cornillie FJ, et al. Eur J Obstet Gynecol Reprod Biol 1987; 26: 39–55; 4. Kaiser E, Wagner ThA. TW Gynäkologie 1989; 2: 386–388; 5. Trivedi P et al. Gynecol Endocrinol 2007; 23 Suppl 1:73–76; 6. Dydrogesterone Summary of Product Characteristics. 29 April 2011. Symptoms After Treatment with Continuous Dydrogesterone Alleviation of symptoms with dydrogesterone1 Patients: Endometriosis confirmed by culdoscopy/laparoscopy, treated with 5 mg dydrogesterone BID for 9 months (n=49) Symptoms at baseline Dysmenorrhoea Symptoms after treatment*1 Complete relief 89% Improved 7% No improvement 4% Dyspareunia Infertility , primary Menorrhagia Pelvic pain, chronic Infertility, secondary Dyspareunia improved significantly only after 12-16 weeks of treatment1 No symptoms Pelvic pain, acute Pain on defaecation 0% 20% 40% 60% 80% Approved dosing 10 or 30 mg/day from day 5 to 25 of the cycle or contiunously2 * Patients with symptoms at beginning of study only, n=45 1. Johnston WI. Br J Gynaecol 1976; 83: 77–80. Graph adapted. 2. Dydrogesterone Summary of Product Characteristics. 29 April 2011. Laparoscopy After Treatment with Continuous Dydrogesterone Regression of endometriotic lesions with dydrogesterone Patients: Endometriosis confirmed by laparoscopy, treated with 5 mg dydrogesterone BID for 9 months (n=49), repeat culdoscopy at end of treatment (n=32) Sites of endometriosis at baseline Repeat laparoscopy results Ovarian, unilateral n=17 Normal, no lesions n=21 Ovarian, bilateral n=16 Regression of lesions n=9 Uterosacral ligaments n=28 No regression n=2 Pelvic peritoneum n=9 Previously uncharted lesions n=3 21 out of 32 patients with repeat laparoscopy showed no lesions after 9 months of daily treatment with dydrogesterone Approved dosing 10 or 30 mg/day from day 5 to 25 of the cycle or continupously2 1. Johnston WI. Br J Gynaecol 1976; 83: 77–80. 2. Dydrogesterone Summary of Product Characteristics. 29 April 2011. Symptoms and Laparoscpy After Treatment with Dydrogesterone Day 5 to 25 Improvement in clinical findings after treatment with dydrogesterone Treatment: 10 mg/day dydrogesterone from day 5 to 15 and 20 mg/day from day 16 to 25 of each cycle, treatment period 6 months or longer (n=20) Improvement in subjective symptoms, palpatory findings and laparoscopic finding Proportion of patients (%) 100% 75% 50% 25% 0% Subjective symptoms Unchanged Palpatory findings Laparoscopic findings Improved No symptom Kaiser E, Wagner ThA. TW Gynäkologie 1989; 2: 386–388 . Symptoms After Treatment with Dydrogesterone Day 5 to 25 Pain during treatment with dydrogesterone of women suffering from endometriosis (n=90) Pain score Treatment: 10 mg/day dydrogesterone or 20 mg/day (in severe cases) on days 5 to 25 of each cycle for 3 to 6 months • Overall 21% symptom free, 67% 2 showed an improvement • Pelvic pain, dysmenorrhea, dyspareunia improved (by 29, 32, 1.5 1.5 38% respectively, p<0.05) after 1 month and after 6 months (by 95, 87, 85%, respectively, p<0.05) 1 Pelvic pain score 0.5 Dysmenorrhoea score Dyspareunia score 0 0 1 2 3 4 5 6 Treatment month Trivedi P, et al. Gynecol Endocrinol 2007; 23 Suppl 1: 73–76. Pregnancy Rates after treatment with Dydrogesterone Pregnancy rates were approximately 50% after dydrogesterone therapy for endometriosis First author (year) Treatment regimen Pregnancy rate (%) Johnston WI (1976)2 2 x 5 mg/day for nine months 53 Makhmudova (2003)3 10 mg/day on days 5-25 of cycle 50 Tumasyan (2001)4 10 mg/day on days 5 to 25 of cycle 57 1. 2. 3. 4. Overton CE, et al. Fertil Steril 1994; 62: 701–707; 2. Johnston WI. Br J Gynaecol 1976; 83: 77–80; 3. Makhmudova GM et al. Akush Ginekol (Sofiia) 2003; 42:42–46; 4. Tumasian KP et al. Lik Sprava 2001; 3:103–105. Conclusions DYDROGESTERONE AND ENDOMETRIOSIS • Decreases inflammatory cytokines1 • Is anti-inflammatory2 and decreases angiogenic factors2 • Effectively treats pelvic pain, dyspareunia and dysmenorrhea3 • Tolerability and safety profile of dydrogesterone makes it suitable to treat clinically suspected endometriosis3 • Highly selective for the progesterone receptor and its metabolites are progestogenic4 • Does not suppress ovarian function when given at therapeutic doses5 • Pregnancy rates of approximately 50% after therapy6-9 1. Schweppe KW. Maturitas 2009; 65 Suppl 1: S23-21; 2. Tariverdian N et al. J Mol Med 2010; 88: 267–278; 3. Trivedi P, et al. Gynecol Endocrinol 2007; 23 Suppl 1: 73–76; 4. Schindler AE, et al. Maturitas 2009; 65(Suppl 1): S3–S11; 5. Bishop PM, et al. Acta Endocrinol 1962; 40: 203–216; 6. Overton CE, et al. Fertil Steril 1994; 62: 701– 707; 7. Johnston WI. Br J Gynaecol 1976; 83: 77–80; 8. Makhmudova GM, et al. Akush Ginekol (Sofiia) 2003; 42: 42–46; 9. Tumasian KP, et al. Lik Sprava 2001; 3: 103–105. DYDROGESTERONE IN HORMONAL THERAPY Equivalent dose for bone endpoints* Estrogen Ultra Low Low Standard High Conjugated equine estrogens (mg) 0.151 0.3 0.625 1.25 Micronized 17β-estradiol (mg) 0.52 1 2 4 1 2 25 50 Estradiol valerate (mg) Transdermal 17β-estradiol (μg) 143 The Estrogen Dose Counts *Estrogenic effects may vary for other endpoints Table reproduced from Maturitas, 40, Gambacciani M, Genazzani AR. Hormone replacement therapy: the benefits in tailoring the regimen and dose. 195–201, Copyright (2001), with permission from Elsevier. 1. Lindsay R et al. Obstet Gynecol 1984;63:759–63; 2. Panay N et al. Climacteric 2007;10:120–31; 3. Ettinger B et al. Obstet Gynecol 2004;4:443–51. 100 Role of progestogens in hormone therapy Estrogen provides the benefits of HRT on menopausal symptoms For women who have not had a hysterectomy, the addition of a progestogen to HRT is necessary to protect the endometrium from the stimulatory effects of unopposed estrogen PEPI Trial: Results of Endometrial Biopsy Placebo CEE alone CEE+MPA sequential CEE+MPA continuous N 119 119 118 120 Normal 98% 38% 95% 99% Simple hyperplasia 1% 28% 3% 1% Complex hyperplasia 1% 23% 2% 0% Atypia 0% 12% 0% 0% Adenocarcinoma 1% 0% 0% 0% Conclusion: Adding a progestogen is needed to safeguard the endometrium Writing Group for the PEPI Trial. JAMA 1996;275:370–5. Femoston® Formulations and Indications • Sequential 1/10 HRT for estrogen deficiency symptoms in postmenopausal women ≥6 months since last menses 17β-estradiol 1 mg/d Dydrogesterone 10 mg/d Day 14 • Bleeding at end of cycle Continuous 1/5 – HRT for estrogen deficiency symptoms in postmenopausal women ≥12 months since last menses 17β-estradiol 1 mg/d Dydrogesterone 5 mg/d Day 14 . . No bleeding Sequential Vasomotor Symptoms In a study of 193 peri- and postmenopausal women: • Mean number of hot flushes per day decreased by 86% • Improvement supported by changes in Greene climacteric symptom score 12.0 E/D (1/10) CEE/norgestrel (0.625/0.15) Mean number of hot flushes per day 10.0 8.0 6.0 4.0 2.0 0.0 -4 -2 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Weeks Figure reproduced with kind permission from Springer Science+Business Media: Arch Gynecol Obstet, Clinical study comparing the effects of sequential hormone therapy with oestradiol/ dydrogesterone and conjugated equine oestrogen/ norgestrel on lipids and symptoms. 274, 2006, 74–80. Cieraad D, Conradt C, Jesinger D, Bakowski M, Figure 1. Sequential : Menopausal Symptoms In a study of 186 postmenopausal women using estradiol/dydrogesterone • Proportion of women bothered by symptoms decreased during treatment Proportion of women bothered by symptom (%) 80 70 Baseline 6 weeks 52 weeks 60 50 40 30 20 10 0 Hot flushes Night sweats Amy JJ, Eur Menop J 1995;2(Suppl):16–22. ©1995, Informa Healthcare. Figure reproduced with permission of Informa Healthcare. Sweating attacks Vaginal dryness Painful intercourse Continuous 0.5/2.5 & 1/5: Vasomotor Symptoms Significant reduction in moderate-to-severe hot flushes vs. placebo (n=305) Mean (95% CI) change from baseline in number of moderateto-severe hot flushes per day -0 Placebo E 0.5 mg/D 2.5 mg E 1 mg/D 5 mg -1 -2 -3 -4 * -5 * -6 ** *** ** -7 *** -8 1 2 3 4 5 6 7 8 Week 9 10 11 12 *p<0.05, **p<0.01, ***p<0.001 vs. placebo Figure reproduced from Maturitas, 67, Stevenson JC, Durand G, Kahler E, Pertyński T. Oral ultra-low dose continuous combined hormone replacement therapy with 0.5mg 17β-oestradiol and 2.5mg dydrogesterone for the treatment of vasomotor symptoms: Results from a double-blind, controlled study. 227– 32, Copyright (2010), with permission from Elsevier. 13 Sequential Endometrial Safety and Bleeding in 579 women, 26 cycles (n=579)1 Endometrial safety was recorded across groups No cases of hyperplasia or malignancy with 1/10 and 2/10 1 polyp occurred with 1/10 Cyclic bleeding patterns were seen Percentage of women with cyclic bleeding was 79% with 1/10 and 91% with 2/10 E 1 mg associated with less cyclic and intermittent bleeding vs. E 2 mg Higher doses of D assoc with higher incidence of bleeds later day of onset Endometrial safety was recorded across groups No cases of hyperplasia or malignancy with 1/10 and 2/10 1. Ferenczy A et al. Climacteric 2002;5:26–35; 2. Burch DJ et al. Brit J Obst Gynaecol 1995;102:243–8. Continuous : Endometrial Safety and Bleeding Patterns (1 year n= 290) 1 case of simple hyperplasia without atypia (treatment failure rate of 0.4%) Women without bleeding increased from 71% (cycle 1) to ~80% by end of the study ~50% of bleeding episodes were spotting 41% women were amenorrheic throughout the study 7 women withdrew prematurely due to uterine bleeding 1. Quereux C et al. Maturitas 2006;53:299–305; 2. Bergeron C et al. Maturitas 2010;66:201–5. Sequential : BMD Sequential E/D effective vs. placebo in preventing loss of bone mass in the lumbar spine and femoral neck over 2 years (n=595) * Mean change from baseline in BMD (%) 8 6 * 6.7% 1 mg E2 + D 5.2% * 4 2.7% * 2mg E2 + D 2.5% 2 Placebo 0 -2 -4 - 1.6% Lumbar spine *p<0.001 vs. placebo Lees B et al. Osteoporos Int 2001;12:251–8. - 1.8% Femoral neck Continuous : BMD • Continuous 1/5, 1/10, and 1/20 significantly increased lumbar vertebrae and hip BMD vs. baseline (n=214) after 1 year 3.63% * L2–L4 2.40%* 12 months 6 months 1.16% Femoral neck * 0.20% 0 +1 +2 +3 +4 Mean percentage change from baseline in BMD *p<0.01 vs. baseline Stevenson J et al. Maturitas 2001;38:197–203. HRT Effect on Cardiovascular Risk Parameters Meta-analysis of 107 randomized, controlled trials (>8 weeks duration), HRT was found to have an effect on following metabolic parameters vs. placebo/no therapy % Change from baseline in patients on HRT HOMA-IR LDL/HDL Triglycerides *† Mean BP * Waist Abdominal circumference fat * * * * * All HRT Transdermal Oral * *† • Oral agents generally produced larger effects than transdermal agents, except with triglycerides, which appeared to increase with oral agents *p<0.05 vs. no HRT; †p<0.05 vs. transdermal Salpeter SR et al. Diabetes Obes Metab 2006;8:538–54. HDL Cholesterol Profile Increase in HDL cholesterol (%) 25 Placebo 1/5 mg 1/10 mg 2/10 mg 2/20 mg (n=54) (n=62) (n=74) (n=60) (n=67) * * 20 * 15 10 * * * * 5 0 Cycle 13 *p≤0.05 vs. placebo Stevenson JC, Rioux JE, Komer L, Gelfand M. Climacteric 2005;8:352–9. ©2005 Informa Healthcare. Figure reproduced with permission of Informa Healthcare. Cycle 26 Lipid profile vs. CEE/Norgestrel In a 24 week study of 193 peri- and postmenopausal women: HDL significantly increased with E/D HDL reduced with CEE/norgestrel (0.625/0.15 mg) Mean change (mmol/L) from baseline at week 24 Total cholesterol HDL cholesterol LDL cholesterol *** ** * **** **** *p<0.05, **p=0.01, ***p=0.003, ****p=0.001 vs. baseline Cieraad D et al. Arch Gynecol Obstet 2006;274:74–80. **** Triglycerides E/D CEE/norgestrel Low-Dose Sequential E / D: Blood Glucose and Insulin • Mean concentration of glucose or insulin Low-dose sequential E/D (1/5, 1/10) (n=15) 6 5 4 5.13 4.96* 4.87** Fasting glucose (mmol/L) 4.14 3 3.12* 2 2.88** Fasting insulin (mU/L) 1 0 Baseline Year 1 Year 2 • E/D can affect menopausal changes in insulin secretion *p<0.05, **p<0.01 vs. baseline Godsland IF et al. Clin Endocrinol (Oxf) 2004;60:541–9. Risk of thromboembolism associated with different progestogens Adjusted ORs (95% CI) for VTE with oral and transdermal estrogen vs. non-users ESTHER case-control study 271 consecutive VTE cases (mean age: 61.6 years) and 610 controls (mean age: 61.5 years) 3.9 (1.5–10.0) 4.2 (1.5–11.6) 0.7 (0.3–1.9) 0.9 (0.4–2.3) (e.g. Nomegestrol acetate) (e.g. Dydrogesterone) Micronized progesterone and pregnane derivatives appear to have an acceptable thrombotic risk profile Canonico M. Circulation 2007;115:840–5. Risk of Stroke Associated with Route of Administration Adjusted RR vs. never-use of HRT (95% CI) Case-control study from the UK General Practice Research Database (1.15– 3.11) (0.62– 1.05) (1.12– 1.40) (1.16– 1.90) • Low-dose transdermal HRT did not appear to increase stroke risk Renoux C et al. BMJ 2010;340:c2519. HRT and the Risk of Coronary Artery Disease and Ischemic Stroke Risk of Coronary Artery Disease • The risk of coronary artery disease is slightly increased in users of combined estrogen-progestogen HRT over the age of 60 years Risk of Ischemic Stroke • The use of estrogen-only and estrogen-progestogen therapy is associated with an up to 1.5-fold increased relative risk of ischemic stroke. The risk of hemorrhagic stroke is not increased during use of HRT. This relative risk is not dependent on age or on duration of use, but as the baseline risk is strongly age-dependent, the overall risk of stroke in women who use HRT will increase with age US WHI studies combined - additional risk of ischemic stroke1 over 5 years’ use Age range (years) Incidence per 1,000 women in placebo arm over 5 years Risk ratio (95% CI) Additional cases per 1,000 HRT users over 5 years (95% CI) 50–59 8 1.3 (1.1–1.6) 3 (1–5) 1No differentiation was made between ischemic and hemorrhagic stroke Netherlands Summary of Product Characteristics (SmPC) , estradiol/dydrogesterone 2/10, 1/10, 1/5, 0.5/2.5 issued 13 April 2012. Is menopausal hormone therapy Associated with Increased Breast Cancer Risk? Evidence from WHI WHI RR for breast cancer: 1.26 (95% CI 1.00–1.59) for current use of HRT (CEE + MPA)1 • Later studies with adjusted CIs showed this was a nonsignificant result2 Excess risk of breast cancer from HRT increases with increase in underlying risk5 Determination of risk should underlie decision to use HRT WHI evidence • No increased risk was identified for women who had had hysterectomy receiving CEE alone3 Relative risk of 1.26 with combined HRT translates to an excess (attributable) risk of 4 per 1000 women taking HRT for 5 years4 1. Rossouw JE et al. JAMA 2002;288:321–33; 2. Langer R et al. Climacteric 2012;15:206–12; 3. Stefanik M et al. JAMA 2006;295:1647–57; 4. Santen R et al. J Clin Endocrinol Metab 2010;95(Suppl 1):s1–66; 5. Gompel A et al. Climacteric 2012;15:241–9. HRT and Breast Cancer Risk - WHI US WHI studies – additional risk of breast cancer after 5 years’ use Age range (years) Incidence per 1,000 women in placebo arm over 5 years Risk ratio (95% CI) Additional cases per 1,000 HRT users over 5 years (95% CI) CEE estrogen-only 50–79 21 0.8 (0.7–1.0) -4 (-6–0)1 CEE + MPA estrogen & progestogen ‡ 50–79 1 14 1.2 (1.0–1.5) +4 (0–9) ‡ When the analysis was restricted to women who had not used HRT prior to the study there was no increased risk apparent during the first 5 years of treatment: after 5 years the risk was higher than non-users WHI study in women with no uterus, which did not show an increase in risk of breast cancer Netherlands Summary of Product Characteristics (SmPC) , estradiol/dydrogesterone 2/10, 1/10, 1/5, 0.5/2.5 issued 13 April 2012. Choice of progestogen and breast cancer risk: E3N French Cohort Study Relative risk (95% CI) Risk of all breast cancer 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 1.69 (1.50– 1.91) 1.00 (0.83– 1.22) 1.16 (0.94– 1.43) Estrogen/ Estrogen/ Estrogen/other Baseline risk without HRT progesterone dydrogesterone progestogens Risk of breast cancer subtypes with E/D 2.1 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 (1.2– 3.8) 1.5 1.1 1.1 (0.8– 1.5) (0.8– 1.17) <5 years ≥5 years Ductal carcinoma (0.8– 2.7) <5 years Lobular carcinoma Not statistically significantly different from risk without HRT Significantly different from the risk without HRT N = 80,377 women, for an average treatment duration of 8.1 years Overall 77.7% were ductal breast cancers vs. 22.3% lobular breast cancers Risk elevation may not be uniform for all progestogens Fournier A et al. Breast Cancer Res Treat 2008;107:103–11; Fournier A et al. J Clin Oncol. 2008 ;26:1260–1268. ≥5 years Standard incidence ratio (95% CI) Choice of Progestogen and Breast Cancer Risk: Finnish Cohort Study 2.2 2.0 1.8 1.64 1.6 1.4 1.2 2.03 2.07 (1.88– 2.18) (1.76– 2.04) (1.49– 1.79) 1.13 1.0 0.8 0.6 (0.49– 2.22) 0.4 0.2 0 Estradiol/ Estradiol/ Baseline risk MPA without HRT dydrogesterone Estradiol/ Estradiol/other NETA progestogens N = 50,210 women >50 years of age, treatment duration 5 years Risk elevation may not be uniform for all progestogens Lyytinen H et al. Obst Gyn 2009;113:65–73. Breast Cancer with HRT: Risk Perception vs. Reality REALITY Actual causes of death among US women PERCEPTION Leading causes of death perceived by women Old age (1%) Smoking (1%) Stress (2%) Other/don’t know (16%) Heart disease (18%) Ovarian cancer (9%) Breast cancer (39%) Other (25%) Other cancer (13%) Pneumonia (4%) COPD (4%) Lung cancer (2%) Ovarian cancer (<2%) Breast cancer (4%) Lung cancer (5%) Figure reproduced with permission from http://www.keepstudy.org/why_keeps/keeps_causeDeath.pdf. Accessed 1 November 2012 Other cancer (11%) Heart disease (45%) Statements from International Societies International Menopause Society Statement on Breast Cancer1 Women should be reassured that the possible increased risks of breast cancer associated with HRT are small <0.1% per annum, or an incidence of <1.0 per 1000 women per year of use Less than the increased risks associated with common lifestyle factors such as reduced physical activity, obesity and alcohol consumption WHI study demonstrated no increased risk in first-time users of HRT during the first 5–7 years of treatment Micronized progesterone or dydrogesterone used with estradiol may be associated with a better risk profile for breast cancer than synthetic progestogens USA Endocrine Society Scientific Statement on Breast Cancer2 • Emerging data from 2 independent studies suggest that progesterone (and perhaps dydrogesterone) in combination with estrogen does not increase breast cancer risk if given for 5 years or less 1. De Villiers TJ et al. Climacteric 2013;16:316–337. 2. Santen R et al. J Clin Endocrinol Metab 2010;95(Suppl1):S1–S66. Conclusion Used by the right woman, at the right dose, Femoston® can: Relieve vasomotor and other menopausal symptoms Provide protection against bone loss (second line) Provide acceptable bleeding patterns Favourable CVS profile Seemingly less impact on breast cancer risk 2013 IMS Recommendations on Menopausal Hormone Therapy – General Principles for Use HRT remains the most effective therapy for vasomotor symptoms Use lowest effective dose of estrogen Tailor to the individual Use as long as there is symptomatic benefit and aware of risks Risk/benefit balance More favorable if treatment is started earlier in menopause Re-evaluate risk/benefit Dydrogesterone and micronized progesterone may be associated with a better risk profile for breast cancer than synthetic progestogens Under 45 years, HRT advised at least until average age of menopause De Villiers TJ et al. Climacteric 2013;16:316–337. . DYDROGESTERONE- FROM MENARCHE TO MENOPAUSE THANK YOU FOR YOUR ATTENTION Pandian 2009 – Outcome and Obstetric Complications Dydrogesterone group experienced a significantly lower miscarriage rate compared with the control group (12.5 % vs. 28.4%; p<0.05) Control (n=96) Dydrogesterone p-value (n=95) Caesarean section 13 12 NS Placenta previa (> 28 weeks) 3 4 NS Preterm labor (28–36 weeks) 6 4 NS Antepartum hemorrhage 4 6 NS Pregnancy-induced hypertension 12 14 NS Intrauterine death/congenital abnormality 0 0 NS Low birth weight (< 2,500 g) 3 2 NS Pandian RU. Maturitas. 2009; 65(Suppl 1): S47-S50. Method Randomised, controlled study in Jordan 180 Pregnant women (<35 years old) with at least 3 previous unexplained consecutive miscarriages with the same partner randomised to: – Oral dydrogesterone 10 mg b.i.d. – Intramuscular human chorionic gonadotrophin (hCG) 5000 IU every 4 days – No additional treatment Treatment started as soon as possible after confirmation of pregnancy and continued until 12th gestational week All women received standard supportive care: multivitamin supplements and recommended bed rest El-Zibdeh 2005 87 Objective and methods To determine whether dydrogesterone therapy for threatened miscarriage in the first trimester improves pregnancy outcome Prospective open study in Malaysia Registration records of 154 pregnant women (gestational age <13 weeks) presenting with vaginal bleeding were evaluated Treatment group: dydrogesterone 40 mg at once plus 10 mg b.i.d. until bleeding stopped. Women were also recommended bed rest and received folic acid Control group: bed rest, folic acid only (standard care) Women followed up until 20 weeks gestation Omar et al 2005 88