A region of chromosome 20 is linked to leprosy susceptibility in a South Indian population.
A major susceptibility locus for leprosy has recently been mapped on chromosome 10 (10p13) by genome-wide linkage analysis. Microsatellite markers from this genome screen that showed suggestive evidence of linkage to leprosy were evaluated in an additional 140 families with affected sib pairs. A second region of linkage has thus been identified on chromosome 20 (20p12). The peak of linkage lies at marker D20S115, which has a significant single-point maximum logarithm of odds score of 3.48 (P=.00003). Transmission disequilibrium testing of the microsatellite markers in 20p12 showed that the marker D20S835 is associated with protection against leprosy (P=.021), which suggests that a locus controlling susceptibility lies close to this marker.
D002874:Chromosome Mapping; D002890:Chromosomes, Human, Pair 20 / Q000235:genetics*; D005260:Female; D005819:Genetic Markers / Q000235:genetics; D020022:Genetic Predisposition to Disease / Q000235:genetics*; D005828:Genetics, Population; D006801:Humans; D007194:India; D007918:Leprosy / Q000235:genetics*; D008297:Male; D018895:Microsatellite Repeats / Q000235:genetics; D009166:Mycobacterium leprae
D005819:Genetic Markers