Sex ratio - 2 females to 1 male [MISCELLANEOUS] Caused by mutations in the ATP-binding cassette, subfamily C, member 6 gene (ABCC6, 603234.0001) [MOLECULAR BASIS] See 177850 for description of heterozygous phenotype [MISCELLANEOUS] Incidence - 1 in 25,000-100,000 [MISCELLANEOUS] Majority of cases diagnosed at age 10-15 years [MISCELLANEOUS]
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