The acrocallosal syndrome and Greig syndrome are not allelic disorders.
Acrocallosal syndrome is an autosomal recessive form of polysyndactyly associated with mental retardation and agenesis of the corpus callosum. There have been suggestions that it is allelic to the Greig cephalopolysyndactyly syndrome. Linkage analysis, using flanking markers, shows this suggestion is unlikely to be correct.
Brueton
L A
LA
Kennedy Galton Centre, Northwick Park Hospital, Harrow, Middlesex.
Chotai
K A
KA
van Herwerden
L
L
Schinzel
A
A
Winter
R M
RM
D000015:Abnormalities, Multiple / Q000235:genetics*; D061085:Agenesis of Corpus Callosum; D000483:Alleles; D002897:Chromosomes, Human, Pair 7; D004252:DNA Mutational Analysis; D005385:Fingers / Q000002:abnormalities*; D005819:Genetic Markers; D006228:Hand Deformities, Congenital / Q000235:genetics*; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics*; D008126:Lod Score; D010375:Pedigree; D010641:Phenotype; D013577:Syndrome
D005819:Genetic Markers