- The critical region of overlap defining the AZFa male infertility interval of proximal Yq contains three transcribed sequences. Sargent, C.A., Boucher, C.A., Kirsch, S., Brown, G., Weiss, B., Trundley, A., Burgoyne, P., Saut, N., Durand, C., Levy, N., Terriou, P., Hargreave, T., Cooke, H., Mitchell, M., Rappold, G.A., Affara, N.A. J. Med. Genet. (1999)