1-70411075-G-C

Variant names:

• chr1-70411075-G-C
• rs663465
• ENST00000799672.1:n.55C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000799672.1(ENSG00000304098):​n.55C>G variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: ENSG00000304098 ENST00000799672.1 non_coding_transcript_exon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.09
• Publications: 13 publications found

Genes affected

ENSG00000304098 (HGNC:):

CTH (HGNC:2501): (cystathionine gamma-lyase) This gene encodes a cytoplasmic enzyme in the trans-sulfuration pathway that converts cystathione derived from methionine into cysteine. Glutathione synthesis in the liver is dependent upon the availability of cysteine. Mutations in this gene cause cystathioninuria. Alternative splicing of this gene results in three transcript variants encoding different isoforms. [provided by RefSeq, Jun 2010]

CTH Gene-Disease associations (from GenCC):

• cystathioninuria

  Inheritance: AR Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: ClinGen, Ambry Genetics, Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTH	NM_001902.6	c.-341G>C		upstream_gene_variant		ENST00000370938.8	NP_001893.2
CTH	NM_001190463.2	c.-341G>C		upstream_gene_variant			NP_001177392.1
CTH	NM_153742.5	c.-341G>C		upstream_gene_variant			NP_714964.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTH	ENST00000370938.8	c.-341G>C		upstream_gene_variant		1	NM_001902.6	ENSP00000359976.3

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 1898

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	0.84
DANN	Benign	0.50
PhyloP100		-1.1
PromoterAI		-0.013	Neutral

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs663465; hg19: chr1-70876758;