chr7-105565270-TTTCCAGATGG-T

Variant names:

• chr7-105565270-TTTCCAGATGG-T
• NM_001355526.2:c.*167_*176delCCATCTGGAA

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_Moderate PM2 PP5

The NM_021930.6(RINT1):​c.1887-4_1892delCCAGATGGTT​(p.Trp630_Leu631del) variant causes a splice acceptor, disruptive inframe deletion, splice region, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000709 in 1,409,462 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.1e-7 (0 hom.)
• Consequence: RINT1 NM_021930.6 splice_acceptor, disruptive_inframe_deletion, splice_region, intron
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:1
• Conservation: PhyloP100: 9.78

Genes affected

EFCAB10 (HGNC:34531): (EF-hand calcium binding domain 10) Predicted to enable calcium ion binding activity. [provided by Alliance of Genome Resources, Apr 2022]

RINT1 (HGNC:21876): (RAD50 interactor 1) This gene encodes a protein first identified for its ability to interact with the RAD50 double strand break repair protein, with the resulting interaction implicated in the regulation of cell cycle progression and telomere length. The encoded protein may also play a role in trafficking of cellular cargo from the endosome to the trans-Golgi network. Mutations in this gene may be associated with breast cancer in human patients. [provided by RefSeq, Oct 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.076082386 fraction of the gene. Cryptic splice site detected, with MaxEntScore 6.6, offset of 12, new splice context is: ttttgtccttgccatctcAGtca. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 7-105565270-TTTCCAGATGG-T is Pathogenic according to our data. Variant chr7-105565270-TTTCCAGATGG-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1930427.We mark this variant Likely_pathogenic, oryginal submissions are: {Likely_pathogenic=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EFCAB10	NM_001355526.2	c.*167_*176delCCATCTGGAA		3_prime_UTR_variant	Exon 5 of 5	ENST00000480514.6	NP_001342455.1
RINT1	NM_021930.6	c.1887-4_1892delCCAGATGGTT	p.Trp630_Leu631del	splice_acceptor_variant, disruptive_inframe_deletion, splice_region_variant, intron_variant	Exon 13 of 15	ENST00000257700.7	NP_068749.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EFCAB10	ENST00000480514	c.*167_*176delCCATCTGGAA		3_prime_UTR_variant	Exon 5 of 5	1	NM_001355526.2	ENSP00000418678.1
RINT1	ENST00000257700.7	c.1887-4_1892delCCAGATGGTT	p.Trp630_Leu631del	splice_acceptor_variant, disruptive_inframe_deletion, splice_region_variant, intron_variant	Exon 13 of 15	1	NM_021930.6	ENSP00000257700.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.09e-7 AC: 1 AN: 1409462 Hom.: 0 AF XY: 0.00000144 AC XY: 1 AN XY: 696370

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.20e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Pathogenic:1

Jul 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant results in the deletion of part of exon 13 (c.1887-4_1892del) of the RINT1 gene. It is expected to disrupt RNA splicing. Variants that disrupt the donor or acceptor splice site typically lead to a loss of protein function (PMID: 16199547), and loss-of-function variants in RINT1 are known to be pathogenic (PMID: 31204009). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RINT1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1930427). In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. -

not specified Uncertain:1

Sep 14, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1887-4_1892del10 variant results from a deletion of 10 nucleotides between positions c.1887-4 and c.1892 and involves the canonical splice acceptor site before coding exon 13 of the RINT1 gene. In silico splice site analysis predicts that this alteration will result in the creation or strengthening of a novel splice acceptor site. This nucleotide region is not well conserved in available vertebrate species. Alterations that disrupt the canonical splice site are expected to cause aberrant splicing, resulting in an abnormal protein or a transcript that is subject to nonsense-mediated mRNA decay. The evidence for this gene-disease relationship is limited; therefore, the clinical significance of this alteration is unclear. -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-105205717;