1-37540758-A-T

Variant names:

• chr1-37540758-A-T
• rs2174769
• NM_024700.4:c.328-3T>A

Variant summary

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

The NM_024700.4(SNIP1):​c.328-3T>A variant causes a splice region, intron 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. 2/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SNIP1 NM_024700.4 splice_region, intron
• Scores: Splicing: ADA: 0.02405
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.792
• Publications: 16 publications found

Genes affected

SNIP1 (HGNC:30587): (Smad nuclear interacting protein 1) This gene encodes a protein that contains a coiled-coil motif and C-terminal forkhead-associated (FHA) domain. The encoded protein functions as a transcriptional coactivator that increases c-Myc activity and inhibits transforming growth factor beta (TGF-beta) and nuclear factor kappa-B (NF-kB) signaling. The encoded protein also regulates the stability of cyclin D1 mRNA, and may play a role in cell proliferation and cancer progression. Mutations in this gene are a cause of psychomotor retardation, epilepsy, and craniofacial dysmorphism (PMRED). [provided by RefSeq, Mar 2012]

SNIP1 Gene-Disease associations (from GenCC):

• psychomotor retardation, epilepsy, and craniofacial dysmorphism

  Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Illumina, G2P

ENSG00000307694 (HGNC:):

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=-0.78).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024700.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SNIP1	NM_024700.4	MANE Select	c.328-3T>A		splice_region intron	N/A	NP_078976.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SNIP1	ENST00000296215.8	TSL:1 MANE Select	c.328-3T>A		splice_region intron	N/A	ENSP00000296215.5
	SNIP1	ENST00000638725.1	TSL:2	n.837T>A		non_coding_transcript_exon	Exon 1 of 2
	ENSG00000307694	ENST00000827919.1		n.939A>T		non_coding_transcript_exon	Exon 3 of 3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1426684 Hom.: 0 Cov.: 40 AF XY: 0.00 AC XY: 0 AN XY: 705576

African (AFR) AF: 0.00 AC: 0 AN: 32524

American (AMR) AF: 0.00 AC: 0 AN: 40890

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24704

East Asian (EAS) AF: 0.00 AC: 0 AN: 39148

South Asian (SAS) AF: 0.00 AC: 0 AN: 84212

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48348

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5612

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1092432

Other (OTH) AF: 0.00 AC: 0 AN: 58814

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	16
DANN	Benign	0.63
PhyloP100		0.79
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.024
dbscSNV1_RF	Benign	0.31
SpliceAI score (max)		0.47		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.47		Position offset: 15

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

Other links and lift over

dbSNP: rs2174769; hg19: chr1-38006359;