22-19149695-C-G

Variant names:

• chr22-19149695-C-G
• NM_005315.2:c.481G>C

Variant summary

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

The NM_005315.2(GSC2):​c.481G>C​(p.Gly161Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000141 in 1,415,142 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict 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: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: GSC2 NM_005315.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.92

Genes affected

GSC2 (HGNC:4613): (goosecoid homeobox 2) Goosecoidlike (GSCL), a homeodomain-containing gene, resides in the critical region for VCFS/DGS on 22q11. Velocardiofacial syndrome (VCFS) is a developmental disorder characterized by conotruncal heart defects, craniofacial anomalies, and learning disabilities. VCFS is phenotypically related to DiGeorge syndrome (DGS) and both syndromes are associated with hemizygous 22q11 deletions. Because many of the tissues and structures affected in VCFS/DGS derive from the pharyngeal arches of the developing embryo, it is believed that haploinsufficiency of a gene involved in embryonic development may be responsible for its etiology. The gene is expressed in a limited number of adult tissues, as well as in early human development. [provided by RefSeq, Jul 2008]

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=0.3064083).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GSC2	NM_005315.2	c.481G>C	p.Gly161Arg	missense_variant	Exon 2 of 3	ENST00000086933.3	NP_005306.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GSC2	ENST00000086933.3	c.481G>C	p.Gly161Arg	missense_variant	Exon 2 of 3	5	NM_005315.2	ENSP00000086933.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000141 AC: 2 AN: 1415142 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 701924

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: 0.00000183

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Uncertain	0.019	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	22
DANN	Benign	0.97
DEOGEN2	Benign	0.35	T
Eigen	Benign	-0.42
Eigen_PC	Benign	-0.21
FATHMM_MKL	Benign	0.39	N
LIST_S2	Uncertain	0.95	D
M_CAP	Pathogenic	0.94	D
MetaRNN	Benign	0.31	T
MetaSVM	Uncertain	-0.26	T
MutationAssessor	Benign	-0.47	N
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	0.35	N
REVEL	Benign	0.27
Sift	Benign	0.66	T
Sift4G	Benign	0.55	T
Polyphen		0.32	B
Vest4		0.16
MutPred		0.37		Gain of disorder (P = 0.0292);
MVP		0.55
MPC		0.65
ClinPred		0.85	D
GERP RS		3.4
Varity_R		0.082
gMVP		0.48

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-19137208;