USMLE Step 1 - Question 2

An 18-year-old male basketball player passes out during a game. An echocardiogram reveals that he has hypertrophic obstructive cardiomyopathy, a.k.a. HOCM (formerly IHSS or idiopathic hypertrophic subaortic stenosis). Which of the following patterns of inheritance are most consistent with HOCM? 

A. 

HOCM-USMLE-Image1

B.

HOCM-USMLE-Image2

C.

HOCM-USMLE-Image3

D. None of the above

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