Review Question - QID 107546

A 17-year-old male college athlete visits your clinic for a physical exam prior to starting his first season with the basketball team. He reports that he has no complaints when working out and admits that he is happy about recently surpassing the 7-foot mark. He has extremely long limbs and has grown at a rate of around 3 inches every year since hitting puberty. Although vitals are normal, eye exam shows an unusually placed lens (Figure A) and auscultation at the apex reveals a mid-systolic click. Given these features, what is the most likely gene affected in this patient?