Complete Androgen Insensitivity Syndrome: From Bench to Bed

Area of Science:

• Genetics
• Endocrinology
• Reproductive Medicine

Background:

• Complete androgen insensitivity syndrome (CAIS) is a disorder where individuals with a 46,XY karyotype and testes are resistant to androgens, resulting in a female phenotype.
• CAIS is caused by inactivating mutations in the androgen receptor (AR) gene, located on the X chromosome.
• Genetic variants in the AR gene are distributed throughout, with a concentration in the ligand-binding domain.

Purpose of the Study:

• To summarize the genetic basis of CAIS.
• To outline the clinical presentation of CAIS.
• To highlight current management challenges and future research directions for improving long-term patient well-being.

Main Methods:

• Review of genetic variants in the androgen receptor gene associated with CAIS.
• Analysis of clinical presentations including primary amenorrhea and inguinal hernias.
• Discussion of current management strategies and areas for future research.

Main Results:

• Hundreds of inactivating AR gene variants have been identified in CAIS patients.
• CAIS typically presents as primary amenorrhea in adolescents or inguinal hernias in children.
• Management aspects like gonadal removal timing and hormone therapy require standardization.

Conclusions:

• Expert, multidisciplinary care is essential for optimizing the quality of life for individuals with CAIS.
• Further research into bone health, immune function, metabolic, and cardiovascular risks is needed.
• Standardization of management protocols will improve long-term outcomes for women with CAIS.