J. Jenderny et al., TRANSMISSION OF A RING CHROMOSOME-18 FROM A MOTHER WITH 46,XX 47,XX,+R(18) MOSAICISM TO HER DAUGHTER, RESULTING IN A 46,XX,R(18) KARYOTYPE/, Journal of Medical Genetics, 30(11), 1993, pp. 964-965
A 6 month old patient is reported with a ring chromosome 18 confirmed
by cytogenetic studies and in situ hybridisation. Her clinical feature
s were similar to previous cases of ring chromosome 18 syndrome. The r
ing chromosome was inherited from the phenotypically and mentally norm
al mother with a mos 46,XX/47,XX, + r(18) karyotype.