Here we present the case of a patient with a novel de novo, likely pathogenic, heterozygous MAP3K7 variant (c.528dupT, p.G177WfsX5) causing cardiospondylocarpofacial syndrome (CSCFS). The variant, which falls in exon 6, is the first frameshift or non-sense mutation to be connected to CSCFS and presents with a phenotype that shares features with other MAP3K7-linked pathologies, including frontometaphyseal dysplasia 2 (FMD2) and the syndrome arising from an interstitial 6q15 deletions which envelop the gene. Other known mutations associated with CSCFS are plotted in black text (1,2,3).
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