USMLE Step 2 CK Lecture Notes 2019: Obstetrics/Gynecology (Kaplan Test Prep)

OB TRIAD

X-Linked    Recessive

The disease is expressed in all males who carry the gene. Family history reveals
the disorder is only found in male relatives, and commonly in maternal uncles.

X-linked recessive examples include:

Hemophilia  A Diabetes  insipidus

Color   blindness Hydrocephalus

Complete    androgen    insensitivity Duchenne  muscular    dystrophy

No  male–male   transmission

Expressed   only    in  males

Female  carriers