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RA-4: 13-cis Retinoic Acid for Treatment of Men With Azoospermia

A Pilot Trial of 13-cis Retinoic Acid (Isotretinoin) for the Treatment of Men With Azoospermia

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03323801
Enrollment
10
Registered
2017-10-27
Start date
2017-07-25
Completion date
2019-05-31
Last updated
2021-10-26

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

Conditions

Male Infertility, Azoospermia

Keywords

Infertility

Brief summary

Men with infertility and normal hormone levels have few options for fertility treatment. Previous research suggests that men with infertility may have low levels of the active form of Vitamin A, called retinoic acid, in their testes. In a pilot study of 20 men with low numbers of sperm (\<10 million motile sperm), roughly half the men showed improvement in sperm production. Thus, we want to see if retinoic acid administration to men with azoospermia (no sperm present) can initiate sperm production.

Detailed description

Twenty men with infertility, aged 21 - 60, due to azoospermia (no apparent sperm in the ejaculate on two separate occasions) will be enrolled in a single-arm pilot trial of daily oral therapy of 20 mg twice daily of 13-cis retinoic acid for 32 weeks. The impact of treatment on the appearance of sperm in the ejaculate will be determined by monthly semen analyses. Note: The outcome measure of serum and seminal plasma 13-cis-retinoic acid concentrations was entered in error and not intended to be reported for this study. Information on these levels is available in our earlier study of 13-cis-retinoic acid in men with sub-fertility. Amory et al. Andrology 2017 5:1115-1123.

Interventions

Accutane is used for the treatment of severe acne

Sponsors

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
CollaboratorNIH
University of Washington
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

20 mg 13-cis retinoic acid twice daily (BID) with meals for 32 weeks

Eligibility

Sex/Gender
MALE
Age
21 Years to 60 Years
Healthy volunteers
No

Inclusion criteria

Infertile men with azoospermia on at least two semen analyses separated by at least one week, and no pregnancy with partner with normal cycles and normal hysterosalpingogram despite \>1 year of unprotected intercourse. \-

Exclusion criteria

hypogonadotropic hypogonadism (that might respond to gonadotropin injections); use of anabolic steroids,illicit drugs, or consumption of more than 4 alcoholic beverages daily; current therapy with retinoic acid (eg Accutane) or vitamin A- of use of isotretinoin within eight weeks of start of dosing;phenytoin, or medication containing tetracycline; personal history of serious psychiatric disorders, score of greater than 15 on the PHQ9 (mood) questionnaire; elevated serum serum triglycerides or other abnormal serum chemistry values; history of inflammatory bowel disease or bone disease; not living within catchment area; participation in another clinical trial \-

Design outcomes

Primary

MeasureTime frameDescription
Total Motile Spermup to 32 weeksNumber of participants with undetectable or detectable sperm in their ejaculates.
Total Sperm and Percentage of These Sperm That Were Motile32 weeksNumber of total sperm in ejaculate and percentage of these sperm that were motile

Secondary

MeasureTime frameDescription
Serious and Non-Serious Adverse Effects32 weeksNumber of participants with Serious and Non-Serious Adverse effects associated with treatment with 13-cis retinoic acid

Countries

United States

Participant flow

Participants by arm

ArmCount
13-cis Retinoic Acid
20 mg 13-cis retinoic acid twice daily (BID) with means for 32 weeks 13-cis retinoic acid: Accutane is used for the treatment of severe acne
10
Total10

Baseline characteristics

Characteristic13-cis Retinoic Acid
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
Age, Continuous36 years
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
8 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
2 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
8 Participants
Region of Enrollment
United States
10 participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 10
other
Total, other adverse events
1 / 10
serious
Total, serious adverse events
1 / 10

Outcome results

Primary

Total Motile Sperm

Number of participants with undetectable or detectable sperm in their ejaculates.

Time frame: up to 32 weeks

Population: Men had idiopathic azoospermia, without evidence of obstruction or know genetic causes of azoospermia, although one man had known AZFc deletion

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Accutane-13-cis Retinoic AcidTotal Motile Spermundetectable8 Participants
Accutane-13-cis Retinoic AcidTotal Motile Spermdetectable motile sperm1 Participants
Primary

Total Sperm and Percentage of These Sperm That Were Motile

Number of total sperm in ejaculate and percentage of these sperm that were motile

Time frame: 32 weeks

Population: Only man who developed sperm in ejaculate on treatment

ArmMeasureValue (NUMBER)
Accutane-13-cis Retinoic AcidTotal Sperm and Percentage of These Sperm That Were Motile20 Percent of sperm that were motile
Secondary

Serious and Non-Serious Adverse Effects

Number of participants with Serious and Non-Serious Adverse effects associated with treatment with 13-cis retinoic acid

Time frame: 32 weeks

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Accutane-13-cis Retinoic AcidSerious and Non-Serious Adverse Effects1 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026