Microarray-CGH analysis of an embryo from a Robertsonian translocation carrier.

<p>Cytogenetic analysis of a cleavage stage embryo from a Robertsonian translocation carrier- 46,XY,t(13;15)(q21.3;q11.2). Microarray-CGH revealed monosomy 13, presumably resulting from a meiotic error due to problems processing the rearranged chromosomes. An additional aneuploidy unrelated to the Robertsonian translocation (monosomy for chromosome 1) was also detected. The two monosomies are indicated by the altered ratio of fluorescence related to the test (embryo) and reference (46,XY) DNA samples. All of the probes corresponding to chromosomes 1 and 13 have test/reference ratios less than 0.3.