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SEPHS2

Synonyms
SPS2
External resources
Summary
This gene encodes an enzyme that catalyzes the production of monoselenophosphate (MSP) from selenide and ATP. MSP is the selenium donor required for synthesis of selenocysteine (Sec), which is co-translationally incorporated into selenoproteins at in-frame UGA codons that normally signal translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, the Sec insertion sequence (SECIS) element, which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. This protein is itself a selenoprotein containing a Sec residue at its active site, suggesting the existence of an autoregulatory mechanism. It is preferentially expressed in tissues implicated in the synthesis of selenoproteins and in sites of blood cell development. A pseudogene for this locus has been identified on chromosome 5.

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
5
Likely pathogenic
0
VUS
1,209
Likely benign
34
Benign
0

Patient Phenotypes

Proportions of phenotypes among 5 patients carrying pathogenic or likely pathogenic variants on SEPHS2 gene are displayed below. The following symptoms were found in patients with a variant in SEPHS2. However, patients may have been diagnosed with a different variant.

Phenotype class
Patients in 3billion (%)
Abnormality of the musculoskeletal system
60%
Abnormality of the nervous system
60%
Abnormality of the eye
40%
Abnormality of head or neck
20%
Abnormality of metabolism homeostasis
20%
Abnormality of the cardiovascular system
20%
Growth abnormality
20%
Abnormal cellular phenotype
0%
Abnormality of blood and blood forming tissues
0%
Abnormality of limbs
0%
Abnormality of prenatal development or birth
0%
Abnormality of the breast
0%
Abnormality of the digestive system
0%
Abnormality of the ear
0%
Abnormality of the endocrine system
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%
Constitutional symptom
0%
Neoplasm
0%

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