ENST00000670357.1:n.-4T>C

Variant names:

• chr5-80654648-C-.
• NM_000791.4:c.-159G>.

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The ENST00000670357.1(MSH3):​n.-80C>. variant causes a upstream gene change. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 N/A (N/A hom., cov:)
  • Exomes 𝑓: N/A (N/A hom.)
• Consequence: MSH3 ENST00000670357.1 upstream_gene
• Clinical Significance: Not reported in ClinVar
• Conservation: No conservation score assigned
• Publications: No publications found

Genes affected

DHFR (HGNC:2861): (dihydrofolate reductase) Dihydrofolate reductase converts dihydrofolate into tetrahydrofolate, a methyl group shuttle required for the de novo synthesis of purines, thymidylic acid, and certain amino acids. While the functional dihydrofolate reductase gene has been mapped to chromosome 5, multiple intronless processed pseudogenes or dihydrofolate reductase-like genes have been identified on separate chromosomes. Dihydrofolate reductase deficiency has been linked to megaloblastic anemia. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2014]

MSH3 (HGNC:7326): (mutS homolog 3) The protein encoded by this gene forms a heterodimer with MSH2 to form MutS beta, part of the post-replicative DNA mismatch repair system. MutS beta initiates mismatch repair by binding to a mismatch and then forming a complex with MutL alpha heterodimer. This gene contains a polymorphic 9 bp tandem repeat sequence in the first exon. The repeat is present 6 times in the reference genome sequence and 3-7 repeats have been reported. Defects in this gene are a cause of susceptibility to endometrial cancer. [provided by RefSeq, Mar 2011]

MSH3 Gene-Disease associations (from GenCC):

• familial adenomatous polyposis 4

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen
• MSH3-related attenuated familial adenomatous polyposis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• Lynch syndrome

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DHFR	NM_000791.4	c.-159G>.		5_prime_UTR_variant	Exon 1 of 6	ENST00000439211.7	NP_000782.1
MSH3	NM_002439.5	c.-80C>.		upstream_gene_variant		ENST00000265081.7	NP_002430.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DHFR	ENST00000439211.7	c.-159G>.		5_prime_UTR_variant	Exon 1 of 6	1	NM_000791.4	ENSP00000396308.2
MSH3	ENST00000265081.7	c.-80C>.		upstream_gene_variant		1	NM_002439.5	ENSP00000265081.6
MSH3	ENST00000667069.1	c.-80C>.		upstream_gene_variant				ENSP00000499502.1
MSH3	ENST00000670357.1	n.-80C>.		upstream_gene_variant				ENSP00000499791.1

Frequencies

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

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

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Other links and lift over

hg19: chr5-79950467;