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Identification of a pathogenic PMP2 variant in a multi-generational family with CMT type 1: Clinical gene panels versus genome-wide approaches to molecular diagnosis.


ABSTRACT: Charcot-Marie-Tooth (CMT) disease type 1 is an inherited peripheral neuropathy characterized by demyelination and reduced nerve conduction velocities. We present a multi-generational family with peripheral neuropathy in whom clinical CMT panel testing failed to conclude a molecular diagnosis. We found a PMP2 pathogenic variant c.155T?>?C, p.(Ile52Thr) that segregates with disease suggesting that PMP2 variants should be considered in patients with neuropathy and that it may be prudent to include in clinical CMT gene panels.

SUBMITTER: Punetha J 

PROVIDER: S-EPMC6326168 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Identification of a pathogenic PMP2 variant in a multi-generational family with CMT type 1: Clinical gene panels versus genome-wide approaches to molecular diagnosis.

Punetha Jaya J   Mackay-Loder Loren L   Harel Tamar T   Coban-Akdemir Zeynep Z   Jhangiani Shalini N SN   Gibbs Richard A RA   Lee Ian I   Terespolsky Deborah D   Lupski James R JR   Posey Jennifer E JE  

Molecular genetics and metabolism 20180824 3


Charcot-Marie-Tooth (CMT) disease type 1 is an inherited peripheral neuropathy characterized by demyelination and reduced nerve conduction velocities. We present a multi-generational family with peripheral neuropathy in whom clinical CMT panel testing failed to conclude a molecular diagnosis. We found a PMP2 pathogenic variant c.155T > C, p.(Ile52Thr) that segregates with disease suggesting that PMP2 variants should be considered in patients with neuropathy and that it may be prudent to include  ...[more]

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