Autosomal recessive primary microcephalies (MCPH)
1Department of Pediatric Neurology, Charité - Universitätsmedizin Berlin, Germany; Institute of Cell Biology and Neurobiology, Charité - Universitätsmedizin Berlin, Germany.
Abstract:
Autosomal recessive primary microcephaly (MCPH) is a genetically heterogeneous disease characterized by a pronounced reduction in volume of otherwise architectonical normal brains and intellectual deficit. Here, we summarize the genetic causes of MCPH types 1-12 known to date.
Insights
Autosomal recessive primary microcephaly (MCPH) is a brain disorder causing reduced head size and intellectual deficit. This review summarizes the genetic causes identified for MCPH types 1 through 12.
Area of Science:
- Genetics
- Neurology
- Developmental Biology
Background:
- Autosomal recessive primary microcephaly (MCPH) is a rare genetic disorder.
- MCPH is characterized by a significantly smaller brain volume despite normal brain structure.
- Affected individuals typically present with intellectual disability.
Purpose of the Study:
- To provide a comprehensive overview of the known genetic causes of MCPH.
- To consolidate information on MCPH types 1-12.
- To aid researchers and clinicians in understanding the genetic heterogeneity of MCPH.
Main Methods:
- Literature review of genetic studies on MCPH.
- Compilation of identified genes and mutations associated with MCPH subtypes.
- Summary of genotype-phenotype correlations where available.
Main Results:
- MCPH is genetically heterogeneous, with at least 12 distinct types identified to date.
- Mutations in various genes involved in cell division, DNA repair, and brain development underlie different MCPH types.
- Specific genes have been linked to particular MCPH classifications (MCPH1-MCPH12).
Conclusions:
- The genetic basis of MCPH is diverse, involving multiple genes crucial for brain development.
- Understanding the genetic landscape of MCPH is essential for accurate diagnosis and potential therapeutic strategies.
- Further research into the function of MCPH-associated genes may reveal novel insights into brain size regulation.
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