chr21-43053336-A-G
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Variant summary
Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_StrongBP6_Very_Strong
The NM_000071.3(CBS):c.*544T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: not found (cov: 0)
Consequence
CBS
NM_000071.3 3_prime_UTR
NM_000071.3 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: 0.143
Genes affected
CBS (HGNC:1550): (cystathionine beta-synthase) The protein encoded by this gene acts as a homotetramer to catalyze the conversion of homocysteine to cystathionine, the first step in the transsulfuration pathway. The encoded protein is allosterically activated by adenosyl-methionine and uses pyridoxal phosphate as a cofactor. Defects in this gene can cause cystathionine beta-synthase deficiency (CBSD), which can lead to homocystinuria. This gene is a major contributor to cellular hydrogen sulfide production. Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Feb 2016]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -12 ACMG points.
BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.94).
BP6
Variant 21-43053336-A-G is Benign according to our data. Variant chr21-43053336-A-G is described in ClinVar as [Benign]. Clinvar id is 340073.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CBS | NM_000071.3 | c.*544T>C | 3_prime_UTR_variant | 17/17 | ENST00000398165.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CBS | ENST00000398165.8 | c.*544T>C | 3_prime_UTR_variant | 17/17 | 1 | NM_000071.3 | P1 |
Frequencies
GnomAD3 genomes Cov.: 0
GnomAD3 genomes
Cov.:
0
GnomAD4 exome Cov.: 0
GnomAD4 exome
Cov.:
0
GnomAD4 genome Cov.: 0
GnomAD4 genome
Cov.:
0
Alfa
AF:
Hom.:
Asia WGS
AF:
AC:
1595
AN:
3478
ClinVar
Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Classic homocystinuria Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 12, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
not provided Benign:1
Benign, criteria provided, single submitter | clinical testing | GeneDx | May 10, 2021 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
CADD
Benign
DANN
Benign
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at