A female infant survived 5(1/2) hours after delivery at 33 weeks gestation. Autopsy showed a lobar variant of holoprosencephaly (HPE). Cytogenetic analysis revealed a 2q37.1-->2q37.3 deletion. This case represents the fourth reported case of HPE associated with partial monosomy 2q37 and the first with an apparent isolated 2q37 deletion. Chromosome segment 2q37.1-->2q37.3 may harbor yet another locus important in forebrain development, which, when disrupted, can lead to brain malformations within the HPE spectrum.
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Lehman et al. (2001) studied this question.
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