SLC5A7 and neuropathy: Initial analysis of variants in genes with known associations with neuropathy identified a potentially deleterious heterozygous sequence variant in SLC5A7 in each family: a heterozygous 2-bp deletion in family A (NM_021815.2: c.1561_1562delCA) and a 1-bp deletion in family B (NM_021815.2: c.1528delA).