Thirumalai A, Ceponis J, Amory JK, Swerdloff R, Surampudi V, Liu PY, Bremner WJ, Harvey E, Blithe DL, Lee MS, Hull L, Wang C, Page ST. Effects of 28 Days of Oral Dimethandrolone Undecanoate in Healthy Men: A Prototype Male Pill.
J Clin Endocrinol Metab 2019;
104:423-432. [PMID:
30252061 PMCID:
PMC6306388 DOI:
10.1210/jc.2018-01452]
[Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/16/2018] [Indexed: 12/28/2022]
Abstract
CONTEXT
Dimethandrolone (DMA) has androgenic and progestational activity. Single oral doses of DMA undecanoate (DMAU) were well tolerated and reversibly suppressed serum LH and testosterone (T) in men.
OBJECTIVE
Assess safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of oral DMAU.
DESIGN
Double-blind, randomized, placebo-controlled study.
SETTING
Two academic medical centers.
PARTICIPANTS
Healthy men (18 to 50 years).
INTERVENTIONS
One hundred men received DMAU [0, 100, 200, or 400 mg, formulated in castor oil/benzyl benzoate (C) or powder (P)] for 28 days. Subjects underwent 24-hour PK sampling on days 1 and 28 and twice weekly ambulatory visits throughout treatment.
MAIN OUTCOME MEASURES
Primary outcomes were safety and tolerability parameters (vitals, laboratory data, mood, and sexual function scores) and adverse events. Secondary outcomes were drug PK profiles and PD effects (serum LH, FSH, and sex hormones).
RESULTS
Eighty-two subjects completed the study and were included in the analysis. There were no serious adverse events. No clinically significant changes developed in safety laboratory parameters. A significant dose effect was seen for weight, hematocrit, high-density lipoprotein cholesterol, corrected QT interval, and sexual desire. Serum 24-hour average concentrations of DMAU and DMA showed dose-related increases (P < 0.001). All six subjects in the P400 group and 12 of 13 subjects in the C400 group achieved marked suppression of LH and FSH (<1.0 IU/L) and serum T (<50 ng/dL).
CONCLUSIONS
Daily oral administration of DMAU for 28 days in healthy men is well tolerated. Doses of ≥200 mg markedly suppress serum T, LH, and FSH. These results support further testing of DMAU as a male contraceptive.
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