Monoallelic expression can govern penetrance of inborn errors of immunity.

Stewart O, Gruber C, Randolph HE, Patel R, Ramba M, Calzoni E, Huang LH, Levy J, Buta S, Lee A, Sazeides C, Prue Z, Hoytema van Konijnenburg DP, Chinn IK, Pedroza LA, Lupski JR, Schmitt EG, Cooper MA, Puel A, Peng X, Boisson-Dupuis S, Bustamante J, Okada S, Martin-Fernandez M, Orange JS, Casanova JL, Milner JD, Bogunovic D