- The DNA helicase BRIP1 is defective in Fanconi anemia complementation group J. Levitus, M., Waisfisz, Q., Godthelp, B.C., de Vries, Y., Hussain, S., Wiegant, W.W., Elghalbzouri-Maghrani, E., Steltenpool, J., Rooimans, M.A., Pals, G., Arwert, F., Mathew, C.G., Zdzienicka, M.Z., Hiom, K., De Winter, J.P., Joenje, H. Nat. Genet. (2005)