Testosterone TRANSdermal Gel for Poor Ovarian Responders Trial (T-TRANSPORT)

Institut Universitari Dexeus

Status and phase: Terminated; Phase 3

Conditions: Infertility; Poor Ovarian Response

Treatments: Drug: Placebo gel; Drug: Testosterone gel

Study type: Interventional

Funder types: Other

Identifiers

NCT02418572

2014-001835-35 (EudraCT Number)

2014.TTRANSPORT

Details and patient eligibility

About

Previous work indicates that 2 months androgen pre-treatment may equip preantral follicles with more FSH receptors and increase the cohort of follicles surviving to the recruitable antral stage. In this regard it may result in an increase in the oocyte yield and the reproductive outcome in women with poor ovarian response. These findings provide a strong rationale for a definitive large RCT. The TTRANSPORT study will include 400 women with poor ovarian response randomized to receive pre-treatment with transdermal testosterone gel or placebo in order to provide conclusive evidence regarding the superiority or not of transdermal testosterone pre-treatment for the management of poor ovarian responders fulfilling the Bologna criteria.

Full description

Studies in primates showed that treatment with testosterone increased the number of growing follicles, lead to proliferation of granulosa and theca cells, while finally reduced the apoptosis of granulosa cells (Vendola et al., 1999; Weil et al., 1999). These studies further suggest that androgens may have a specific action in pre-antral and small antral follicles, prior to serving as substrate for estradiol synthesis in larger follicles and in this regard influence the responsiveness of the ovaries to gonadotropins and amplify the effects of FSH on the ovary.

Despite the available evidence, only 3 small RCTs evaluated the effect of transdermal testosterone on infertile patients with poor ovarian response to stimulation. A pooled analysis of these studies demonstrated a benefit in clinical and ongoing pregnancy rates for testosterone pre-treated patients (González-Comadran et al., 2012). However, two of these trials were considerably small, whereas all of them restricted testosterone administration between 5 and 21 days prior ovarian stimulation. Evidence from basic research and early trials suggest that androgens should be administered for at least 2 months before initiation of ovarian stimulation (Casson PR, 2000), in order affect preantral follicles and equip them with more FSH receptors in an attempt to have a larger cohort of follicles surviving to the recruitable antral stage.

Taking into account the promising results from recently conducted small RCTS, the investigators decided to perform a double blind placebo controlled randomized controlled trial, with adequate sample size, in order to test the effect of administration of transdermal testosterone in poor ovarian responders fulfilling the Bologna criteria, for 2 months prior ovarian stimulation in a long agonist protocol. The daily dose of transdermal testosterone gel (TTG) will be 0.55gr (5.5mg testosterone/day). The specific dose was selected based on previous pharmacokinetic studies in women according to which daily application of 5 mg of transdermal testosterone cream (Fooladi, 2014) or TTG (Singh et al. 2006, Nathorst-Böös et al., 2005) is likely to restore fT levels to the premenopausal reference range. Although no side effects had been described after pre-treatment with higher doses of 12.5mg TTG for 21 days in a previous randomized controlled trial (Kim et al., 2011), it is likely that higher doses will result in supraphysiological TT and fT levels. Therefore the dose of 0.55gr TTG (5.5mg testosterone/day) has been selected for the T-TRANSPORT trial since this will restore TT and fT levels to levels above and within the upper normal reference range.

Enrollment: 290 patients

Sex: Female

Ages: 18 to 43 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

Patients participating in the TTRANSPORT study will be women who are considered poor ovarian responders according to the "Bologna criteria" (Ferraretti et al., 2011).

Subjects must fulfil the following criteria to be included in the study:

1. All subjects must sign the Informed consent documents prior to screening evaluations.
2. Age: between 18-43 years old.
3. One of the features below:

Infertile female <40 years old with i. ≤ 3 oocytes in a previous cycle and AFC <7 OR ii. ovarian surgery/chemotherapy and AFC<7 OR iii. ≤ 3 oocytes in at least 2 previous cycles with ≥300IU gonadotropins

Infertile female ≥40 years old with i. ≤ 3 oocytes in a previous cycle OR ii. AFC <7. Patients will be randomized according to different age groups (<36, 36-39 and ≥40 years old).

Exclusion criteria

1. Perimenopausal women with amenorrhea not having a regular cycle
2. Basal FSH >20 IU/l
3. Uterine malformations
4. Recent history of any current untreated endocrine abnormality
5. Unilateral or bilateral hydrosalpinx (visible on USS, unless clipped)
6. Contraindications for the use of gonadotropins
7. Recent history of severe disease requiring regular treatment
8. Use of androgens during the last 3 months
9. Patients with SHBG values <20nmol/L or >160nmol/L
10. Azoospermia (sperm derived through FNA or TESE)

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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290 participants in 2 patient groups, including a placebo group

Transdermal testosterone gel

Experimental group

Description:

Patients will receive once daily application of 0.55 gr TTG (Testosterone gel 1%; Laboratories Besins International,Paris,France) with a 5.5 mg/d nominal delivery rate of testosterone starting from day 1 or 2 of the following menstrual cycle, for approximately 65 days. Pituitary down-regulation will be induced by daily injections of 0.1mg triptorelin started on day 21 of the next cycle following enrollment in the study, up to and including the day of hCG administration. After 2 weeks of down-regulation, daily SC injections of HP-hMG (Menopur®) (300 IU/day) will be administered up to the day of hCG administration. Ovulation triggering will be induced with 250μg rhCG (Ovidrelle®) followed by oocyte pick-up \~36 hours later and ICSI. A maximum of 2 embryos, following each center's national criteria of single embryo transfer, will be transferred 3 days later. Luteal phase support with be performed with progesterone tablets ( Utrogestan®) (200mg x3, intravaginally).

Treatment:

Drug: Testosterone gel

Placebo transdermal gel

Placebo Comparator group

Description:

Patients will receive once daily application of 0.55 gr identical placebo gel starting from day 1 or 2 of the following menstrual cycle, for approximately 65 days. Pituitary down-regulation will be induced by daily injections of 0.1mg triptorelin started on day 21 of the next cycle following enrollment in the study, up to and including the day of hCG administration. After 2 weeks of down-regulation, daily SC injections of HP-hMG (Menopur®) (300 IU/day) will be administered up to the day of hCG administration. Ovulation triggering will be induced with 250μg rhCG (Ovidrelle®) followed by oocyte pick-up \~36 hours later and ICSI. A maximum of 2 embryos, following each center's national criteria of single embryo transfer, will be transferred 3 days later. Luteal phase support with be performed with progesterone tablets ( Utrogestan®) (200mg x3, intravaginally).

Treatment:

Drug: Placebo gel