Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0027947 (neutropenia)
 17,527 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Charcot-Marie-Tooth (CMT) disease is a clinically and genetically heterogeneous group of peripheral neuropathies. Different chromosomal loci have been linked with three autosomal dominant, 'intermediate' types of CMT: DI-CMTA, DI-CMTB and DI-CMTC. We refined the locus associated with DI-CMTB on chromosome 19p12-13.2 to 4.2 Mb in three unrelated families with CMT originating from Australia, Belgium and North America. After screening candidate genes, we identified unique mutations in dynamin 2 (DNM2) in all families. DNM2 belongs to the family of large GTPases and is part of the cellular fusion-fission apparatus. In transiently transfected cell lines, mutations of DNM2 substantially diminish binding of DNM2 to membranes by altering the conformation of the beta3/beta4 loop of the pleckstrin homology domain. Additionally, in the Australian and Belgian pedigrees, which carry two different mutations affecting the same amino acid, Lys558, CMT cosegregated with neutropenia, which has not previously been associated with CMT neuropathies.
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PMID:Mutations in the pleckstrin homology domain of dynamin 2 cause dominant intermediate Charcot-Marie-Tooth disease. 1573 54

Mutations in dynamin 2 (DNM2) have been associated with autosomal dominant centronuclear myopathy, dominant intermediate Charcot-Marie-Tooth (CMT) type B and CMT2. Here, we report a novel DNM2 mutation in the Pleckstrin homology domain of DNM2 (p.K559del) in a patient with an axonal length-dependent sensorimotor polyneuropathy predominantly affecting the lower limbs. Neuropathy is associated with congenital cataracts, ophthalmoparesis, ptosis and neutropenia. There was no evidence of a skeletal myopathy on EMG or muscle biopsy. We suggest that this constellation of clinical features can help the diagnosis and selection of patients for direct DNM2 genetic analysis.
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PMID:A novel mutation in the dynamin 2 gene in a Charcot-Marie-Tooth type 2 patient: clinical and pathological findings. 1839 88

Charcot-Marie-Tooth (CMT) disease or hereditary motor and sensory neuropathy is a genetically and clinically heterogeneous group of disorders of the peripheral nervous system. Mutations in multiple genes are currently known. We report an original case of CMT associated with chronic neutropenia in a patient with a K562del mutation in the dynamin 2 (DNM2) gene in a patient presenting with alterated cognitive function. Associated manifestations may guide molecular study.
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PMID:[Non-fortuitous dynamin II mutation-related association: neutropenia and Charcot-Marie-Tooth disease]. 2238 72