Hypertrophic Osteoarthropathy, Primary, Autosomal Dominant, is also known as phoad. An important gene associated with Hypertrophic Osteoarthropathy, Primary, Autosomal Dominant is SLCO2A1 (Solute Carrier Organic Anion Transporter Family Member 2A1). Affiliated tissues include skin and colon, and related phenotypes are ptosis and acne