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The safety of finasteride for female-to-male (FTM) transgender patients

The safety of finasteride for female-to-male (FTM) transgender patients with androgenetic alopecia (AGA) associated with hormone therapy

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs061210040
Enrollment
5
Registered
2021-10-07
Start date
2022-01-05
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Female-to-male (FTM) transgender Gender identity disorder, gender dysphoria

Interventions

Finasteride 0.2 mg are orally administered once daily for 3 months. If patients are able to received the drug safely after 3 months, the dosage is increased to 1.0 mg and they are observed for an addi

Sponsors

Tominaga Yusuke
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: (1) Patients diagnosed with female-to-male (FTM) transgender who are 20 years of age or older and younger than 60 years at the time of obtaining consent (2) Receiving testosterone replacement therapy in our department. (3) Have androgenetic alopecia (II or higher in the Modified Norwood-Hamilton Classification) (4) Provide sufficient informed consent to participate in the study, and get his or her voluntary written consent.

Exclusion criteria

Exclusion criteria: (1) History of allergy, which is associated with finasteride. (2) Liver dysfunction. (3) Post-sex reassignment surgery. (4) Severe mental disorders (e.g., severe depression). (5) Inappropriate for enrollement decided by the attending physician.

Design outcomes

Primary

MeasureTime frame
Treatment-related adverse events at 1 week, 1 month, and 3 months from the start of administration, and percentage of patients who could continue treatment at 3 months

Secondary

MeasureTime frame
(1) Treatment effect (evaluation of improvement from baseline using photographs of the parietal area using the Norwood-Hamilton classification) (2) Blood examination (CBC, AST, ALT, ALP, gamma- GTP, T-Bil, BUN, Cr, UA, estradiol, testosterone, T.Cho, HDL-C, LDL-C, TG, LH, FSH, D-dimer) (3) Physical examination (weight, BMI, body fat percentage, muscle mass) (4) Subjective symptoms (cessation of menstruation, change in acne)

Contacts

Public ContactYusuke Tominaga

Okayama University Hospital

y.tominaga0824@gmail.com+81-86-235-7287

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026