Identification of incestuous parental relationships by SNP-based DNA microarrays CP Schaaf, DA Scott, J Wiszniewska, AL Beaudet The Lancet Volume 377, Issue 9765, Pages 555-556 (February 2011) DOI: 10.1016/S0140-6736(11)60201-8 Copyright © 2011 Elsevier Ltd Terms and Conditions
Figure SNP-based microarray (using 620 901 markers with mean and median marker spacing of 4·7 kb and 2·7 kb, respectively) on a 3-year-old boy with multiple medical problems, indicating 668 Mb of absence of heterozygosity (shown in green blocks) This finding is consistent with the patient being conceived as the product of a mating between first-degree relatives (coefficient of inbreeding 1/4, expected absence of heterozygosity 716 Mb). For matings between second-degree relatives (eg, uncle-niece, double first cousins), the inbreeding coefficient would be 1/8 and expected absence of heterozygosity 358 Mb. The Lancet 2011 377, 555-556DOI: (10.1016/S0140-6736(11)60201-8) Copyright © 2011 Elsevier Ltd Terms and Conditions