chrX-11758279-G-A

Position:

• chrX-11758279-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_078629.4(MSL3):​c.16G>A​(p.Gly6Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 21)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: MSL3 NM_078629.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.18

Genes affected

MSL3 (HGNC:7370): (MSL complex subunit 3) This gene encodes a nuclear protein that is similar to the product of the Drosophila male-specific lethal-3 gene. The Drosophila protein plays a critical role in a dosage-compensation pathway, which equalizes X-linked gene expression in males and females. Thus, the human protein is thought to play a similar function in chromatin remodeling and transcriptional regulation, and it has been found as part of a complex that is responsible for histone H4 lysine-16 acetylation. This gene can undergo X inactivation. Alternative splicing results in multiple transcript variants. Related pseudogenes have been identified on chromosomes 2, 7 and 8. [provided by RefSeq, Jul 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.317811).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MSL3	NM_078629.4	c.16G>A	p.Gly6Ser	missense_variant	1/13	ENST00000312196.10	NP_523353.2
MSL3	NM_078628.2	c.16G>A	p.Gly6Ser	missense_variant	1/9		NP_523352.1
MSL3	NM_001282174.1	c.-349G>A		5_prime_UTR_variant	1/12		NP_001269103.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MSL3	ENST00000312196.10	c.16G>A	p.Gly6Ser	missense_variant	1/13	1	NM_078629.4	ENSP00000312244	P4

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0 AN: 997890 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 313528

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 21

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 31, 2023

The c.16G>A (p.G6S) alteration is located in exon 1 (coding exon 1) of the MSL3 gene. This alteration results from a G to A substitution at nucleotide position 16, causing the glycine (G) at amino acid position 6 to be replaced by a serine (S). 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	Uncertain	0.48
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Benign	0.053	T;.;.;.
FATHMM_MKL	Uncertain	0.85	D
LIST_S2	Benign	0.80	T;T;T;T
M_CAP	Pathogenic	0.39	D
MetaRNN	Benign	0.32	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.3	L;L;.;.
MutationTaster	Benign	0.98	D;D
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.9	N;N;.;.
REVEL	Benign	0.19
Sift	Pathogenic	0.0	D;T;.;.
Sift4G	Benign	0.22	T;T;.;.
Polyphen		0.11	B;.;.;.
Vest4		0.36
MutPred		0.20		Gain of phosphorylation at G6 (P = 0.0206);Gain of phosphorylation at G6 (P = 0.0206);Gain of phosphorylation at G6 (P = 0.0206);Gain of phosphorylation at G6 (P = 0.0206);
MVP		0.40
MPC		1.6
ClinPred		0.98	D
GERP RS		2.3
Varity_R		0.80
gMVP		0.79

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: chrX-11776398;