Type II citrullinemia

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Classification according to ICD-10
E72.2 Urea cycle disorders - citrullinemia
ICD-10 online (WHO version 2019)

The Citrullinemia type II is a rare, often in Japan occurring form of Citrullinemia , a rare congenital metabolic disorder with lack of argininosuccinate synthase , an enzyme of the urea cycle . The main feature is hyperammonaemia , the course is less pronounced.

Synonyms are: citrullinemia, adult, type 2; CTLN2; Citrine deficiency, adult

Most of the reports are in Japanese and date from the 1970s.

distribution

The incidence is estimated to be 1 in 100,000-230,000, clustered in Japan. Inheritance is autosomal - recessive .

root cause

The disease are mutations in SLC25A13 - gene on chromosome 7 locus q21.3 basis.

Clinical manifestations

Clinical criteria are:

  • Onset of illness in adulthood
  • Episodes of hyperammonaemia with states of restlessness, neuropsychiatric abnormalities, memory loss and even coma

There is also a neonatal form with failure to thrive , short stature , liver dysfunction, intrahepatic cholestasis , hepatomegaly , coagulation disorder , hemolytic anemia and hypoglycemia .

diagnosis

The diagnosis results from the blood test and can be confirmed by the mutation detection.

therapy

Liver transplantation is an option .

literature

Individual evidence

  1. a b c citrullinemia type II. In: Orphanet (database for rare diseases).
  2. H. Wick, C. Bachmann, R. Baumgartner, T. Brechbühler, JP Colombo, U. Wiesmann, MJ Mihatsch, H. Ohnacker: Variants of citrullinaemia. In: Archives of Disease in Childhood. Volume 48, Number 8, August 1973, pp. 636-641, PMID 4783005 , PMC 1648609 (free full text).
  3. I. Matsuda, M. Anakura, p Arashima, Y. Saito, Y. Oka: A variant form of citrullinemia. In: The Journal of pediatrics. Volume 88, Number 5, May 1976, pp. 824-826, PMID 1271146 .
  4. ^ Genetics Home Reference
  5. Citrullinemia, adult-onset type II.  In: Online Mendelian Inheritance in Man . (English)
  6. Neonatal intrahepatic cholestasis due to citrine deficiency. In: Orphanet (Rare Disease Database).
  7. HH Tan, WC Chow, KH Lim, WK Wan, AY Chung, PC Cheow, CK Tan: Liver transplantation in an adult with citrullinaemia type 2. In: Journal of transplantation. Volume 2011, 2011, p. 176370, doi: 10.1155 / 2011/176370 , PMID 21647347 , PMC 3103874 (free full text).

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