A 3MC syndrome that has_material_basis_in autosomal recessive inheritance of homozygous mutation in the mannan binding lectin serine peptidase 1 gene (MASP1) on chromosome 3q27. [ http://purl.obolibrary.org/obo/ECO_0007637 http://purl.obolibrary.org/obo/ECO_0007636 url:https://ghr.nlm.nih.gov/condition/3mc-syndrome url:https://www.omim.org/entry/257920 ]