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GPX2

Synonyms
GI-GPx, GPRP, GPRP-2, GPx-2, GPx-GI, GSHPX-GI, GSHPx-2
External resources
Summary
The protein encoded by this gene belongs to the glutathione peroxidase family, members of which catalyze the reduction of organic hydroperoxides and hydrogen peroxide (H2O2) by glutathione, and thereby protect cells against oxidative damage. Several isozymes of this gene family exist in vertebrates, which vary in cellular location and substrate specificity. This isozyme is predominantly expressed in the gastrointestinal tract (also in liver in human), is localized in the cytoplasm, and whose preferred substrate is hydrogen peroxide. Overexpression of this gene is associated with increased differentiation and proliferation in colorectal cancer. This isozyme is also a selenoprotein, containing the rare amino acid selenocysteine (Sec) at its active site. Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. Alternatively spliced transcript variants have been found for this gene.

Variant Counts

Variant classification counts, according to ACMG guideline on all identified variants among our tested samples, are listed. The variants with over 5% variant frequency in population genome databases ( gnomAD, dbSNP, etc.) are excluded.

Pathogenic
2
Likely pathogenic
0
VUS
1,050
Likely benign
0
Benign
0

Patient Phenotypes

Proportions of phenotypes among 2 patients carrying pathogenic or likely pathogenic variants on GPX2 gene are displayed below. The following symptoms were found in patients with a variant in GPX2. However, patients may have been diagnosed with a different variant.

Phenotype class
Patients in 3billion (%)
Abnormality of the nervous system
100%
Abnormality of limbs
50%
Abnormality of the musculoskeletal system
50%
Constitutional symptom
50%
Abnormal cellular phenotype
0%
Abnormality of blood and blood forming tissues
0%
Abnormality of head or neck
0%
Abnormality of metabolism homeostasis
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the cardiovascular system
0%
Abnormality of the digestive system
0%
Abnormality of the ear
0%
Abnormality of the endocrine system
0%
Abnormality of the eye
0%
Abnormality of the genitourinary system
0%
Abnormality of the immune system
0%
Abnormality of the integument
0%
Abnormality of the respiratory system
0%
Abnormality of the thoracic cavity
0%
Abnormality of the voice
0%
Growth abnormality
0%
Neoplasm
0%

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