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Letters to the Editor - Letter in Response to Previously Published Articles
2019:85:3;310-311
doi: 10.4103/ijdvl.IJDVL_149_19
PMID: 30971531

Is semen analysis necessary prior to initiation of finasteride treatment?

Oliver Clement Lobo, Venkataram Mysore
 Department of Dermatology, Venkat Center for Skin and Plastic Surgery, Institue for advanced Dermatology and Post graduate training, Bengaluru, Karnataka, India

Correspondence Address:
Venkataram Mysore
Venkat Center for Skin and Plastic Surgery, 3437, 1st G Cross, 7th Main, Next to BTS Bus Depot, Subanna Garden, Vijayanagar, Bengaluru - 560 040, Karnataka
India
How to cite this article:
Lobo OC, Mysore V. Is semen analysis necessary prior to initiation of finasteride treatment?. Indian J Dermatol Venereol Leprol 2019;85:310-311
Copyright: (C)2019 Indian Journal of Dermatology, Venereology, and Leprology

Sir,

We have read with great interest the article on “Safety of important dermatological drugs (retinoids, immune suppressants, antiandrogens and thalidomide) in reproductively active males with respect to pregnancy outcome: A brief review of literature”, Indian J Dermatol Venereol Leprol 2018;84:539-46 by Kumar et al.

This letter is with respect to finasteride, which is a synthetic 5-alpha-reductase inhibitor that prevents the conversion of testosterone to dihydrotestosterone. It is commonly used in dermatology for the treatment of androgenetic alopecia at a dose of 1 mg per day. The article rightly notes that various studies have reported adverse effects caused by finasteride which includes erectile dysfunction, ejaculatory dysfunction and loss of libido. However, the authors have mentioned that it is prudent to get a baseline semen analysis before starting any patient on finasteride to rule out oligospermia and/or subfertility. We express our reservations about this statement, as the authors have not quoted sufficient evidence to back such recommendation. The level of evidence quoted is of low quality and is based on two published reports[1],[2] and one clinical study[3] with a small study population. We raise this issue because the recommendation is a far-reaching statement with important consequences for dermatology practice. It is impractical to carry out such investigations routinely before starting the drug for each patient, particularly in a matter that concerns sexual issues. Such a statement can have serious medicolegal implications—a patient can quote this recommendation in a court of law putting a dermatologist in jeopardy.

We studied this matter and found that there is no other published study or guideline which has made such a recommendation earlier. Overstreet et al. in a double-bind placebo-controlled study included patients on low-dose finasteride of 1 mg orally for a period of 48 weeks. Baseline semen analysis was assessed and at 24 weekly intervals thereafter. The study concluded that 1 mg finasteride had no significant effects on spermatogenesis, sperm motility and semen production.[4]

A study conducted by Amory et al. included 99 patients and semen analysis was done at baseline and subsequently after initiating finasteride 5 mg. The analysis showed decreased total sperm count, semen volume, sperm concentration and sperm motility but no effect on sperm morphology. However, the dose in this study was much higher (5 mg) and not the regularly prescribed dosage (1 mg) in dermatological practice.[3]

US Food and Drug Administration recommended that clear causal links between finasteride (Propecia and Proscar) and sexual adverse events have not been established and that information about these adverse events be provided to patients as part of a discussion of risk and benefits of finasteride when determining the best treatment option.[5] There was no mention of prior semen analysis in the recommendation.

Indian Association of Dermatologists, Venereologists and Leprologists therapeutic guidelines committee recommended that it is better to avoid the drug in patients who have had a history of oligospermia or infertility, particularly if they are newly married and trying to raise a family. A patient who is anxious and expresses reservations about taking the drug also may avoid the drug. There was no recommendation that semen analysis should be carried out before prescribing the drug.[5]

Thus, all these articles recommend caution to be exercised while prescribing the drug, and that, full information is to be provided to the patient while prescribing the drug, but none have recommended that baseline sperm count to be estimated while starting the drug. The mention by authors that such baseline estimation of semen analysis to be done in the article is therefore hasty and based on insufficient evidence.

Such a recommendation is impractical to be implemented in routine practice and will put off patients from taking the drug. It will deny the patients of one of the few evidence-based treatments for androgenetic alopecia. It also can have far-reaching impact in a possible medicolegal situation arising out of finasteride administration.

We, therefore, feel that the recommendation is made either without an evidence-based assessment or evaluation of the practical impact of such a statement.

Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.

References
1.
Tu HY, Zini A. Finasteride-induced secondary infertility associated with sperm DNA damage. Fertil Steril 2011;95:2125.e13-4.
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2.
Ricci G, Martinelli M, Luppi S, Lo Bello L, De Santis M, Skerk K, et al. Finasteride and fertility: Case report and review of the literature. J Drugs Dermatol 2012;11:1511-3.
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3.
Amory JK, Wang C, Swerdloff RS, Anawalt BD, Matsumoto AM, Bremner WJ, et al. The effect of 5alpha-reductase inhibition with dutasteride and finasteride on semen parameters and serum hormones in healthy men. J Clin Endocrinol Metab 2007;92:1659-65.
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4.
Overstreet JW, Fuh VL, Gould J, Howards SS, Lieber MM, Hellstrom W, et al. Chronic treatment with finasteride daily does not affect spermatogenesis or semen production in young men. J Urol 1999;162:1295-300.
[Google Scholar]
5.
Mysore V, Shashikumar BM. Guidelines on the use of finasteride in androgenetic alopecia. Indian J Dermatol Venereol Leprol 2016;82:128-34.
[Google Scholar]

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