Approach to the infertile man.

Area of Science:

• Reproductive Endocrinology
• Male Infertility Diagnostics
• Genetic Basis of Infertility

Background:

• Infertility affects many young men and women, with evaluation typically starting after one year of unsuccessful conception attempts.
• Comprehensive evaluation of the couple is essential to identify the source of infertility, whether male, female, or both.
• Diagnostic objectives include excluding treatable conditions and identifying candidates for assisted reproductive technologies or genetic screening.

Observation:

• Semen analyses, testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH) levels are key for male infertility assessment.
• Hormone profiles help differentiate between gonadotropin deficiency, primary testicular failure, spermatogenic failure, and androgen resistance.
• Y-chromosome microdeletions are a primary cause of spermatogenic failure in men with azoospermia or severe oligozoospermia.

Findings:

• Gonadotropin deficiency in men is effectively treated with gonadotropin therapy.
• Intracytoplasmic sperm injection (ICSI) is a primary treatment for idiopathic male factor infertility.
• ICSI is associated with increased risks, including multiple gestation and adverse pregnancy outcomes, necessitating genetic counseling.

Implications:

• Genetic screening, including karyotyping and Yq microdeletion testing, is recommended for infertile men with specific conditions.
• Early and accurate diagnosis of male infertility factors can guide appropriate treatment strategies.
• Understanding the genetic underpinnings of infertility is vital for reproductive decision-making and counseling.