Question 1

What syndromes or genetic conditions are covered for 46,XY DSD?

Accepted Answer

The content focuses on rare autosomal recessive androgen biosynthetic defects due to 17b-HSD type 3 and 5a-reductase type 2 deficiencies, both affecting 46,XY disorders of sex development.

Question 2

How is diagnosis typically established for 17b-HSD3 and 5a-RD2 deficiencies?

Accepted Answer

Diagnosis relies on hormonal evaluation using ratios such as T/D4 or T/DHT, but definitive diagnosis requires molecular genetic testing to confirm the underlying defect.

Question 3

What clinical course and management considerations are emphasized?

Accepted Answer

Variable undervirilization at birth is followed by spontaneous virilization at puberty, with outcomes affecting fertility potential, gender transition, and tumor risk. Early diagnosis and multidisciplinary, individualized psychosocial and clinical management are highlighted to support gender assignment decisions and long-term outcomes.