DJS is usually diagnosed after puberty, although cases have been reported in neonates.[12]Kondo T, Yagi R. Dubin-Johnson syndrome in a neonate. N Engl J Med. 1975 May 8;292(19):1028-9.
http://www.ncbi.nlm.nih.gov/pubmed/1117948?tool=bestpractice.com
[13]Nakata F, Oyanagi K, Fujiwara M, et al. Dubin-Johnson syndrome in a neonate. Eur J Paediatr. 1979;132(4):299-301.
http://www.ncbi.nlm.nih.gov/pubmed/520367?tool=bestpractice.com
[14]Haimi-Cohen Y, Merlob P, Marcus-Eidlits T, et al. Dubin-Johnson syndrome as a cause of neonatal jaundice: the importance of coproporphyrins investigation. Clin Pediatr (Phil). 1998 Aug;37(8):511-3.
http://www.ncbi.nlm.nih.gov/pubmed/9729708?tool=bestpractice.com
[15]Tsai WH, Teng RJ, Chu JS, et al. Neonatal Dubin-Johnson syndrome. J Paediatr Gastroenterol Nutr. 1994 Feb;18(2):253-4.
http://www.ncbi.nlm.nih.gov/pubmed/8014778?tool=bestpractice.com
It is generally diagnosed between the ages of 10 and 30 years.[6]Rastogi A, Krishnani N, Pandey R. Dubin-Johnson syndrome: a clinicopathologic study of twenty cases. Indian J Pathol Microbiol. 2006 Oct;49(4):500-4.
http://www.ncbi.nlm.nih.gov/pubmed/17183837?tool=bestpractice.com
Overall, the prevalence is extremely low but more common than Rotor's syndrome, which is also an inherited disorder of conjugated hyperbilirubinaemia. No accurate prevalence figures are available. DJS has been described worldwide in all races, nationalities, and ethnic backgrounds, and in both sexes, although males predominate and present at an earlier age. The highest recognised prevalence (1 in 1300) is in Iranian Jews and is clustered in families. The prevalence in Moroccan Jews is nearly as high, reflecting the divergence of these populations 2000 to 2500 years ago.[16]Shani M, Seligsohn V, Gilon E, et al. Dubin-Johnson syndrome in Israel: clinical, laboratory and genetic aspects of 101 cases. Q J Med. 1970 Oct;39(156):549-67.
http://www.ncbi.nlm.nih.gov/pubmed/5532959?tool=bestpractice.com
[17]Zlotogora J. Hereditary disorders among Iranian Jews. Am J Med Genet. 1995 Jul 31;58(1):32-7.
http://www.ncbi.nlm.nih.gov/pubmed/7573153?tool=bestpractice.com
[18]Mor-Cohen R, Zivelin A, Fromovich-Amit Y, et al. Age estimates of ancestral mutations causing factor VII deficiency and Dubin-Johnson syndrome in Iranian and Moroccan Jews are consistent with ancient Jewish migrations. Blood Coagul Fibrinolysis. 2007 Mar;18(2):139-44.
http://www.ncbi.nlm.nih.gov/pubmed/17287630?tool=bestpractice.com