A Cornelia de Lange syndrome that has_material_basis_in a mutation in the SMC1A gene, which encodes a subunit of the cohesin complex, on chromosome Xp11.
A Cornelia de Lange syndrome that has_material_basis_in heterozygous mutation in the NIPBL gene, which encodes a component of the cohesin complex, on chromosome 5p13.
A Cornelia de Lange syndrome that has_material_basis_in heterozygous mutation in the RAD21 gene, which encodes a component of the cohesin complex, on chromosome 8q24.