NM_021228.3:c.570C>G

Variant names:

• chr19-49650959-C-G
• rs373203311
• NM_021228.3:c.570C>G

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_021228.3(SCAF1):​c.570C>G​(p.Pro190Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000662 in 151,100 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. Synonymous variant affecting the same amino acid position (i.e. P190P) has been classified as Likely benign.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 27)
• Consequence: SCAF1 NM_021228.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.271
• Publications: 0 publications found

Genes affected

SCAF1 (HGNC:30403): (SR-related CTD associated factor 1) Enables RNA polymerase II C-terminal domain binding activity. Predicted to be involved in RNA splicing; mRNA processing; and transcription by RNA polymerase II. Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (REVEL=0.031).
• BP7: Synonymous conserved (PhyloP=-0.271 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_021228.3. 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
	SCAF1	NM_021228.3	MANE Select	c.570C>G	p.Pro190Pro	synonymous	Exon 7 of 11	NP_067051.2	Q9H7N4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SCAF1	ENST00000360565.8	TSL:2 MANE Select	c.570C>G	p.Pro190Pro	synonymous	Exon 7 of 11	ENSP00000353769.2	Q9H7N4
	SCAF1	ENST00000892601.1		c.591C>G	p.Pro197Pro	synonymous	Exon 6 of 10	ENSP00000562660.1
	SCAF1	ENST00000892599.1		c.570C>G	p.Pro190Pro	synonymous	Exon 7 of 11	ENSP00000562658.1

Frequencies

GnomAD3 genomes AF: 0.00000662 AC: 1 AN: 151100 Hom.: 0 Cov.: 27

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000148

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 25

GnomAD4 genome AF: 0.00000662 AC: 1 AN: 151100 Hom.: 0 Cov.: 27 AF XY: 0.0000136 AC XY: 1 AN XY: 73770

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

African (AFR) AF: 0.00 AC: 0 AN: 41088

American (AMR) AF: 0.00 AC: 0 AN: 15192

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5138

South Asian (SAS) AF: 0.00 AC: 0 AN: 4782

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10548

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000148 AC: 1 AN: 67600

Other (OTH) AF: 0.00 AC: 0 AN: 2058

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.47
CADD	Benign	7.5
DANN	Benign	0.68
PhyloP100		-0.27
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: rs373203311; hg19: chr19-50154216;