Establishment and characterization of three human pluripotent stem cell lines from Charcot-Marie-Tooth disease Type 4B3 patients bearing mutations in MTMR5/Sbf1 gene.

Myotubularin-Related Protein 5 (MTMR5) is an inactive, poorly characterized D3-phosphatidylinositol phosphatase. Mutations in MTMR5 have been linked to Charcot-Marie-Tooth Disease Type 4B3 (CMT4B3), a rare, early-onset, recessive peripheral neuropathy. Here, we describe the establishment and validation of three human induced pluripotent stem cell (iPSC) lines derived from unrelated CMT4B3 patients, each harboring homozygous MTMR5/Sbf1 mutations. Current MTMR5 animal models do not clearly link Sbf1 mutations to severe neuropathy, so such a resource is highly desired to further elucidate the relationship between MTMR5 dysfunction and peripheral nerve degeneration.