Broadening the phenotype associated with mutations in UPF3B: two further cases with renal dysplasia and variable developmental delay.

Abstract excerpt

We present two brothers with mutations in UPF3B, an X-linked intellectual disability gene. Our family consists of two affected brothers and a carrier mother. Both affected brothers had renal dysplasia. A maternal uncle died from a congenital heart defect at 4 months. The two boys had variable degrees of developmental delay. One had macrocephaly, significant expressive speech delay and constipation. The other...

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