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Holoprosencephaly 2
A rare disorder characterized by the partial separation of the cerebral hemispheres. It is associated with mutations in the SIX3 gene. [from NCI]
Holoprosencephaly 4
A rare disorder caused by mutations in the TGIF gene mapped to chromosome 18p11.3. It is characterized by semilobar holoprosencephaly, hypotelorism, and ptosis. [from NCI]
Aplasia of the premaxilla
Absence of the premaxilla, which is the embryonic structure that forms the anterior part of the maxilla. [from HPO]
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