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Postaxial polydactyly. This is the most common situation, in which the extra digit is on the ulnar side of the hand, thus the side of the little finger. This can also be called postaxial polydactyly. It can manifest itself very subtly, for instance only as a nubbin on the ulnar side of the little finger, or very distinctly, as a fully developed ...
Preaxial polysyndactyly, in which the duplicated digit is on the side of the thumb or big toe, is less common. [3] Crossed polysyndactyly, in which polysyndactyly is present on the hand and foot, and is preaxial on one and postaxial on the other, is extremely rare and often occurs with other genetic disorders.
Scalp defects-postaxial polydactyly syndrome is a very rare genetic disorder which is characterized by congenital defects of the scalp and type A postaxial polydactyly. [1] [2] An additional finding is severe intellectual disability. It is thought to be inherited in an autosomal dominant manner.
Bardet–Biedl syndrome is a pleiotropic disorder with variable expressivity and a wide range of clinical variability observed both within and between families. The most common clinical features are rod–cone dystrophy, with childhood-onset night-blindness followed by increasing visual loss; postaxial polydactyly; truncal obesity that manifests during infancy and remains problematic ...
Dundar and coworkers characterized and mapped acropectoral syndrome and also showed it was unrelated to acropectorovertebral syndrome. The mapping showed that the acropectoral locus was in a region where preaxial polydactyly and triphalangeal thumb-polysyndactyly had previously been
Mutations in this gene have been associated with several diseases, including Greig cephalopolysyndactyly syndrome, Pallister–Hall syndrome, preaxial polydactyly type IV, and postaxial polydactyly types A1 and B. [6] DNA copy-number alterations that contribute to increased conversion of the oncogenes Gli1–3 into transcriptional activators by the Hedgehog signaling pathway are included in a ...
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Polydactyly alopecia seborrheic dermatitis; Polydactyly cleft lip palate psychomotor retardation; Polydactyly myopia syndrome; Polydactyly postaxial dental and vertebral; Polydactyly postaxial with median cleft of upper lip; Polydactyly postaxial; Polydactyly preaxial type 1; Polydactyly syndrome middle ray duplication