Pelizaeus-merzbacher Disease; Pmd

Description

Pelizaeus-Merzbacher disease is an X-linked recessive hypomyelinative leukodystrophy (HLD1) in which myelin is not formed properly in the central nervous system. PMD is characterized clinically by nystagmus, spastic quadriplegia, ataxia, and developmental delay (Inoue, 2005). Genetic Heterogeneity of Hypomyelinating LeukodystrophyOther forms of hypomyelinating leukodystrophy include HLD2 (OMIM ), caused by mutation in the GJC2/GJA12 gene (OMIM ) on chromosome 1q41; HLD3 (OMIM ), caused by mutation in the AIMP1 gene (OMIM ) on chromosome 4q24; HLD4 (OMIM ), caused by mutation in the HSPD1 gene (OMIM ) on chromosome 2q33.1; and HLD5 (OMIM ), caused by mutation in the FAM126A gene (OMIM ) on chromosome 7p15; HLD6 (OMIM ), caused by mutation in the TUBB4A gene (OMIM ) on chromosome 19p13; HLD7 (OMIM ), caused by mutation in the POLR3A gene (OMIM ) on chromosome 10q22; HLD8 (OMIM ), caused by mutation in the POLR3B gene (OMIM ) on chromosome 12q23; HLD9 (OMIM ), caused by mutation in the RARS gene (OMIM ) on chromosome 5; HLD10 (OMIM ), caused by mutation in the PYCR2 gene (OMIM ) on chromosome 1q42; HLD11 (OMIM ), caused by mutation in the POLR1C gene (OMIM ) on chromosome 6p21; HLD12 (OMIM ), caused by mutation in the VPS11 gene (OMIM ) on chromosome 11q23; HLD13 (OMIM ) caused by mutation in the HIKESHI gene (OMIM ) on chromosome 11q14; HLD14 (OMIM ), caused by mutation in the UFM1 gene (OMIM ) on chromosome 13q13; HLD15 (OMIM ), caused by mutation in the EPRS gene (OMIM ) on chromosome 1q41; HLD16 (OMIM ), caused by mutation in the TMEM106B gene (OMIM ) on chromosome 7p21; and HLD17 (OMIM ), caused by mutation in the AIMP2 gene (OMIM ) on chromosome 7p22.

Clinical Features

• Intellectual disability
• Seizures
• Global developmental delay
• Short stature
• Generalized hypotonia
• Hearing impairment
• Microcephaly
• Scoliosis
• Ataxia
• Nystagmus

And another 70 symptoms. If you need more information about this disease we can help you.