The authers reported the results of field survey on acatalasemia and hypocatalasemia during the years of 1970 and 1971. Six hypocatalasemias were seen in the tests of 3, 593 individuals in several parts of Japan.
No acatalasemic individuals were reported since 1968. Consequently, the total of reported acatalasemias were 96 cases of 46 families by the end of 1971.
