Translocation (X;9)(p11;q34) in a girl with incontinentia pigmenti (IP): implications for the regional assignment of the IP locus to Xp11?
A t(X;9)(p11;q34) is reported in a girl with incontinentia pigmenti (IP). The X breakpoint is at p11.21. Although no similar case has been reported, this breakpoint may be significant insofar IP is considered an X-linked dominant mutation and could be of help in a specific X DNA probes study.