Question: How many people are affected by Dubin-Johnson syndrome ?
Answer: Although Dubin-Johnson syndrome occurs in people of all ethnic backgrounds, it is more common among Iranian and Moroccan Jews living in Israel. Studies suggest that this disorder affects 1 in 1,300 Iranian Jews in Israel. Additionally, several people in the Japanese population have been diagnosed with Dubin-Johnson syndrome. This condition appears to be less common in other countries.
Source: GHR