17-8144851-T-A

Variant names:

• chr17-8144851-T-A
• rs2253820
• NM_002616.3:c.2361A>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_002616.3(PER1):​c.2361A>T​(p.Thr787Thr) variant causes a synonymous 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: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PER1 NM_002616.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -3.14
• Publications: 0 publications found

Genes affected

PER1 (HGNC:8845): (period circadian regulator 1) This gene is a member of the Period family of genes and is expressed in a circadian pattern in the suprachiasmatic nucleus, the primary circadian pacemaker in the mammalian brain. Genes in this family encode components of the circadian rhythms of locomotor activity, metabolism, and behavior. This gene is upregulated by CLOCK/ARNTL heterodimers but then represses this upregulation in a feedback loop using PER/CRY heterodimers to interact with CLOCK/ARNTL. Polymorphisms in this gene may increase the risk of getting certain cancers. Alternative splicing has been observed in this gene; however, these variants have not been fully described. [provided by RefSeq, Jan 2014]

MIR6883 (HGNC:50019): (microRNA 6883) microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. [provided by RefSeq, Sep 2009]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.6).
• BP7: Synonymous conserved (PhyloP=-3.14 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002616.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PER1	NM_002616.3	MANE Select	c.2361A>T	p.Thr787Thr	synonymous	Exon 18 of 23	NP_002607.2
	MIR6883	NR_106943.1		n.*143A>T		downstream_gene	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PER1	ENST00000317276.9	TSL:1 MANE Select	c.2361A>T	p.Thr787Thr	synonymous	Exon 18 of 23	ENSP00000314420.4
	PER1	ENST00000857860.1		c.2361A>T	p.Thr787Thr	synonymous	Exon 18 of 23	ENSP00000527919.1
	PER1	ENST00000857861.1		c.2358A>T	p.Thr786Thr	synonymous	Exon 18 of 23	ENSP00000527920.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1430628 Hom.: 0 Cov.: 56 AF XY: 0.00 AC XY: 0 AN XY: 709090

African (AFR) AF: 0.00 AC: 0 AN: 32936

American (AMR) AF: 0.00 AC: 0 AN: 41718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24878

East Asian (EAS) AF: 0.00 AC: 0 AN: 38604

South Asian (SAS) AF: 0.00 AC: 0 AN: 82096

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51018

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5668

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1094724

Other (OTH) AF: 0.00 AC: 0 AN: 58986

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.60
CADD	Benign	1.6
DANN	Benign	0.86
PhyloP100		-3.1

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs2253820; hg19: chr17-8048169;