ABSTRACT The alpha 1 and 2 chains of type IV collagen, encoded by the COL4A1 (MIM 120130) and COL4A2 (MIM 120090) respectively, play essential roles in the vascular basement membranes. Pathogenic variants in COL4A1 / COL4A2 are associated with autosomal dominant cerebral angiopathies. The clinical manifestations of COL4A1 / COL4A2 ‐related disorders include: aneurysms, intracerebral hemorrhage, polymicrogyria, porencephaly, heterotopia, periventricular leukomalacia, epilepsy, and neurodevelopmental disorders. COL4A1 pathogenic variants that are in exons 24 and 25 have been associated with hereditary angiopathy, nephropathy, aneurysms, and cramps. The multisystemic phenotypes of COL4A1 / COL4A2 ‐related disorders are increasingly being studied. Animal models have suggested that COL4A2 ‐related disorders may also manifest with a variable combination of multisystemic abnormalities affecting the eyes, muscles, and kidneys. Okano and colleagues recently reported a case of recurrent episodes of rhabdomyolysis in a 2‐year‐old with COL4A1 ‐related disorder raising fundamental questions on mechanisms of COL4A1 / COL4A2 variants in muscle homeostasis. To date, rhabdomyolysis has not been associated with COL4A2 ‐related disorder in humans. Rhabdomyolysis is a medical emergency, where there is elevated creatine kinase (CK) level in the blood and increased excretion of myoglobin in urine, due to skeletal muscle damage and release of intracytoplasmic proteins into systemic circulation. Rhabdomyolysis is a serious medical condition. It require intensive care management due to an increased risk of some life‐threatening complications [including disseminated intravascular coagulation, renal failure, and severe hyperkalemia]. Herein, we report a case of rhabdomyolysis in an adult with COL4A2 ‐related structural brain malformations (including polymicrogyria and heterotopia).

Bukola A. Olarewaju

Judy Tejon

Shaymaa Shurrab

Alicia Chen

Fadi Shamoun

Benn E. Smith

Mayowa A. Osundiji

American Journal of Medical Genetics Part A

美国医学遗传学杂志 - A 部分 (AJMG) 为您提供遗传疾病和出生缺陷的所有生物学和医学方面的持续报道，以及在当前基因型/表型相关性的背景下深入记录表型分析。除了 A 部分，AJMG 还出版了另外两个部分： B 部分：神经精神遗传学，涵盖了对神经和精神疾病遗传机制的实验和临床研究。 C 部分：医学遗传学研讨会，客座编辑的主题评论合集AJMG 读者的热门话题。

The American Journal of Medical Genetics, Part A focuses on the biological and medical aspects of genetic disorders and birth defects, providing ongoing research and in-depth analysis of phenotype in the context of current genotype/phenotype correlations. In addition to Part A, AJMG publishes two other parts: Part B, which covers experimental and clinical studies on the genetic mechanisms of neuropsychiatric disorders; and Part C, which is a collection of themed reviews edited by guest editors on topics of interest to AJMG readers.

《American Journal of Medical Genetics, Part A》（美国医学遗传学杂志 - A 部分）专注于遗传疾病和出生缺陷的生物学与医学各个方面的持续研究，深入探讨基因型与表型之间的关系。除了 A 部分外，AJMG 还出版了两个其他部分：B 部分专注于神经精神遗传学，涵盖神经和精神疾病的遗传机制的实验与临床研究；C 部分则是医学遗传学研讨会，汇集了客座编辑对AJMG读者感兴趣的热门话题的评论合集。

Category	Quartile
生物学	4
生物学, 遗传学	4

COL4A2‐Related Disorder Presenting in Adulthood With Rhabdomyolysis

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info

Category	Quartile
GENETICS & HEREDITY	3