NM_144777.3:c.73C>A

Variant names:

• chr13-77556625-C-A
• rs537704611
• NM_144777.3:c.73C>A

Variant summary

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

The NM_144777.3(SCEL):​c.73C>A​(p.Arg25Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,630 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 0.0000014 (0 hom.)
• Consequence: SCEL NM_144777.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.60
• Publications: 0 publications found

Genes affected

SCEL (HGNC:10573): (sciellin) The protein encoded by this gene is a precursor to the cornified envelope of terminally differentiated keratinocytes. This protein localizes to the periphery of cells and may function in the assembly or regulation of proteins in the cornified envelope. Transcript variants encoding different isoforms exist. A transcript variant utilizing an alternative polyA signal has been described in the literature, but its full-length nature has not been determined. [provided by RefSeq, Jul 2008]

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=-0.61).
• BP7: Synonymous conserved (PhyloP=1.6 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144777.3. 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
	SCEL	NM_144777.3	MANE Select	c.73C>A	p.Arg25Arg	synonymous	Exon 3 of 33	NP_659001.2	O95171-1
	SCEL	NM_003843.4		c.73C>A	p.Arg25Arg	synonymous	Exon 3 of 32	NP_003834.3
	SCEL	NM_001160706.2		c.73C>A	p.Arg25Arg	synonymous	Exon 3 of 31	NP_001154178.1	O95171-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCEL	ENST00000349847.4	TSL:1 MANE Select	c.73C>A	p.Arg25Arg	synonymous	Exon 3 of 33	ENSP00000302579.5	O95171-1
	SCEL	ENST00000377246.7	TSL:1	c.73C>A	p.Arg25Arg	synonymous	Exon 3 of 32	ENSP00000366454.3	O95171-2
	SCEL	ENST00000856158.1		c.73C>A	p.Arg25Arg	synonymous	Exon 3 of 33	ENSP00000526217.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461630 Hom.: 0 Cov.: 30 AF XY: 0.00000275 AC XY: 2 AN XY: 727128

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33472

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111808

Other (OTH) AF: 0.00 AC: 0 AN: 60376

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0296732), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.61
CADD	Benign	2.5
DANN	Benign	0.56
PhyloP100		1.6

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs537704611; hg19: chr13-78130760; COSMIC: COSV100583101;