A number sign (#) is used with this entry because of evidence that ZTTK syndrome (ZTTKS) is caused by heterozygous mutation in the SON gene (182465) on chromosome 21q22.
No phenotypic subgroups are expected here - but we need examples for k = 1 as well I guess
A number sign (#) is used with this entry because of evidence that ZTTK syndrome (ZTTKS) is caused by heterozygous mutation in the SON gene (182465) on chromosome 21q22.
No phenotypic subgroups are expected here - but we need examples for k = 1 as well I guess