KIF1B and hereditary pheochromocytoma-paraganglioma: We previously described a family in which predisposition to pheochromocytoma (PCC), segregates into three generations with a germline heterozygous nucleotide variant of KIF1B (c.4442G>A, p.Ser1481Asn) which encodes the kinesin-like protein KIF1B (1).