16-27828798-A-G

Position:

• chr16-27828798-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001109763.2(GSG1L):​c.821T>C​(p.Phe274Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: GSG1L NM_001109763.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.32

Genes affected

GSG1L (HGNC:28283): (GSG1 like) Predicted to be involved in regulation of AMPA receptor activity. Predicted to be located in postsynaptic density. Predicted to be active in Schaffer collateral - CA1 synapse; glutamatergic synapse; and plasma membrane. Predicted to be integral component of postsynaptic density membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GSG1L	NM_001109763.2	c.821T>C	p.Phe274Ser	missense_variant	5/7	ENST00000447459.7	NP_001103233.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GSG1L	ENST00000447459.7	c.821T>C	p.Phe274Ser	missense_variant	5/7	2	NM_001109763.2	ENSP00000394954	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Feb 07, 2023

The c.821T>C (p.F274S) alteration is located in exon 5 (coding exon 5) of the GSG1L gene. This alteration results from a T to C substitution at nucleotide position 821, causing the phenylalanine (F) at amino acid position 274 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	Pathogenic	0.72
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.060
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Benign	0.098	T;.;.;.
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.77	T;T;T;T
M_CAP	Benign	0.026	D
MetaRNN	Uncertain	0.74	D;D;D;D
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	1.3	L;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.75	T
PROVEAN	Uncertain	-3.1	D;D;D;D
REVEL	Uncertain	0.39
Sift	Uncertain	0.017	D;D;D;T
Sift4G	Uncertain	0.025	D;D;D;T
Polyphen		0.99	D;P;.;P
Vest4		0.91
MutPred		0.20		Gain of phosphorylation at F274 (P = 0.0088);.;.;.;
MVP		0.48
MPC		1.7
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.55
gMVP		0.90

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: chr16-27840119;