chr6-107749747-G-C

Position:

• chr6-107749747-G-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_198081.5(SCML4):​c.223C>G​(p.Leu75Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000274 in 1,461,784 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: SCML4 NM_198081.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.21

Genes affected

SCML4 (HGNC:21397): (Scm polycomb group protein like 4) Predicted to enable chromatin binding activity and histone binding activity. Predicted to be involved in negative regulation of transcription, DNA-templated. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.03378418).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SCML4	NM_198081.5	c.223C>G	p.Leu75Val	missense_variant	3/8	ENST00000369020.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SCML4	ENST00000369020.8	c.223C>G	p.Leu75Val	missense_variant	3/8	5	NM_198081.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461784 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727200

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 26, 2022

The c.223C>G (p.L75V) alteration is located in exon 3 (coding exon 2) of the SCML4 gene. This alteration results from a C to G substitution at nucleotide position 223, causing the leucine (L) at amino acid position 75 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.092
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.60
CADD	Benign	21
DANN	Benign	0.90
DEOGEN2	Benign	0.0049	.;T;.;.
Eigen	Benign	-0.35
Eigen_PC	Benign	-0.11
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.88	D;T;T;T
M_CAP	Benign	0.0050	T
MetaRNN	Benign	0.034	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.29	.;N;.;.
MutationTaster	Benign	0.64	D;N;N
PrimateAI	Benign	0.37	T
PROVEAN	Benign	-0.45	N;N;N;N
REVEL	Benign	0.064
Sift	Benign	1.0	T;T;T;T
Sift4G	Benign	1.0	T;T;T;.
Polyphen		0.0020, 0.13	.;B;B;.
Vest4		0.17
MutPred		0.10		.;Gain of glycosylation at S76 (P = 0.1409);.;.;
MVP		0.26
MPC		0.16
ClinPred		0.21	T
GERP RS		4.3
Varity_R		0.057
gMVP		0.18

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-108070951;