Localization of a new type of X-linked liver glycogenosis to the chromosomal region Xp22 containing the liver {alpha}-subunit of phosphorylase kinase (PHKA2)
Abstract
The authors describe here a new type of X-linked liver glycogen storage disease. The main symptoms include liver enlargement and growth retardation. The clinical and biochemical abnormalities of this glycogenosis are similar to those of classical X-linked liver glycogenosis due to phosphorylase kinase deficiency (XLG). However, in constrast to patients with XLG, the patients described here have no reduced phosphorylase kinase activity in erythrocytes and leukocytes, and no enzyme deficiency could be found. Linkage analysis of four families with this X-linked type of liver glycogenosis assigned the disease gene to Xp22. Lod scores obtained with the markers DXS987, DXS207, and DXS999 were 3.97, 2.71, and 2.40, respectively, all at 0% recombination. Multipoint linkage analysis localized the disease gene between DXS143 and DXS989 with a maximum lod score of 4.70 at {theta}=0, relative to DXS987. As both the classical XLG gene and the liver {alpha}-subunit of PHK (PHKA2) are also located in Xp22, this variant type of XLG may be allelic to classical XLG, and both diseases may be caused by mutations in PHKA2. Therefore, they propose to classify XLG as XLG type I (the classical type of XLG) and XLG type II (the variant type of XLG). 28 refs., 2more »
- Authors:
-
- Univ. of Antwerp (Belgium); and others
- Publication Date:
- OSTI Identifier:
- 250055
- Resource Type:
- Journal Article
- Journal Name:
- Genomics
- Additional Journal Information:
- Journal Volume: 21; Journal Issue: 3; Other Information: PBD: Jun 1994
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 55 BIOLOGY AND MEDICINE, BASIC STUDIES; GLYCOGEN; METABOLIC DISEASES; HUMAN X CHROMOSOME; GENETIC MAPPING; PHOSPHOTRANSFERASES; ENZYME ACTIVITY
Citation Formats
Hendrickx, J, Coucke, P, and Willems, P J. Localization of a new type of X-linked liver glycogenosis to the chromosomal region Xp22 containing the liver {alpha}-subunit of phosphorylase kinase (PHKA2). United States: N. p., 1994.
Web. doi:10.1006/geno.1994.1322.
Hendrickx, J, Coucke, P, & Willems, P J. Localization of a new type of X-linked liver glycogenosis to the chromosomal region Xp22 containing the liver {alpha}-subunit of phosphorylase kinase (PHKA2). United States. https://doi.org/10.1006/geno.1994.1322
Hendrickx, J, Coucke, P, and Willems, P J. 1994.
"Localization of a new type of X-linked liver glycogenosis to the chromosomal region Xp22 containing the liver {alpha}-subunit of phosphorylase kinase (PHKA2)". United States. https://doi.org/10.1006/geno.1994.1322.
@article{osti_250055,
title = {Localization of a new type of X-linked liver glycogenosis to the chromosomal region Xp22 containing the liver {alpha}-subunit of phosphorylase kinase (PHKA2)},
author = {Hendrickx, J and Coucke, P and Willems, P J},
abstractNote = {The authors describe here a new type of X-linked liver glycogen storage disease. The main symptoms include liver enlargement and growth retardation. The clinical and biochemical abnormalities of this glycogenosis are similar to those of classical X-linked liver glycogenosis due to phosphorylase kinase deficiency (XLG). However, in constrast to patients with XLG, the patients described here have no reduced phosphorylase kinase activity in erythrocytes and leukocytes, and no enzyme deficiency could be found. Linkage analysis of four families with this X-linked type of liver glycogenosis assigned the disease gene to Xp22. Lod scores obtained with the markers DXS987, DXS207, and DXS999 were 3.97, 2.71, and 2.40, respectively, all at 0% recombination. Multipoint linkage analysis localized the disease gene between DXS143 and DXS989 with a maximum lod score of 4.70 at {theta}=0, relative to DXS987. As both the classical XLG gene and the liver {alpha}-subunit of PHK (PHKA2) are also located in Xp22, this variant type of XLG may be allelic to classical XLG, and both diseases may be caused by mutations in PHKA2. Therefore, they propose to classify XLG as XLG type I (the classical type of XLG) and XLG type II (the variant type of XLG). 28 refs., 2 figs., 3 tabs.},
doi = {10.1006/geno.1994.1322},
url = {https://www.osti.gov/biblio/250055},
journal = {Genomics},
number = 3,
volume = 21,
place = {United States},
year = {Wed Jun 01 00:00:00 EDT 1994},
month = {Wed Jun 01 00:00:00 EDT 1994}
}