“…The chromosome analyses performed on families 975 (Shapiro et al, 1997), 1118 (Rajic and de Veber, 1966), and 2965 (Norton et al, 1995) were normal. Other investigators have also reported normal karyotypes in ODDD patients (Gillespie, 1964;Reisner et al, 1969;Thoden et al, 1977;Beighton et al, 1979;Traboulsi et al, 1986;Battisti et al, 1992;Gutmann et al, 1991;McKiernan and McCann, 1993). Lymphoblastoid cell lines were prepared by immortalization with EBV, and high-molecular-weight leukocyte DNA was isolated from each individual by standard methods.…”