2-120797346-C-T

Position:

• chr2-120797346-C-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_001374353.1(GLI2):​c.26C>T​(p.Ala9Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000958 in 1,461,820 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: 0.0000096 (0 hom.)
• Consequence: GLI2 NM_001374353.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.55

Genes affected

GLI2 (HGNC:4318): (GLI family zinc finger 2) This gene encodes a protein which belongs to the C2H2-type zinc finger protein subclass of the Gli family. Members of this subclass are characterized as transcription factors which bind DNA through zinc finger motifs. These motifs contain conserved H-C links. Gli family zinc finger proteins are mediators of Sonic hedgehog (Shh) signaling and they are implicated as potent oncogenes in the embryonal carcinoma cell. The protein encoded by this gene localizes to the cytoplasm and activates patched Drosophila homolog (PTCH) gene expression. It is also thought to play a role during embryogenesis. The encoded protein is associated with several phenotypes- Greig cephalopolysyndactyly syndrome, Pallister-Hall syndrome, preaxial polydactyly type IV, postaxial polydactyly types A1 and B. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.15010509).
• BS2: High AC in GnomAdExome4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
GLI2	NM_001374353.1	c.26C>T	p.Ala9Val	missense_variant	2/14	ENST00000361492.9	NP_001361282.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
GLI2	ENST00000361492.9	c.26C>T	p.Ala9Val	missense_variant	2/14	1	NM_001374353.1	ENSP00000354586.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000958 AC: 14 AN: 1461820 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727212

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: 0.0000126

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 provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 29, 2024

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.083
BayesDel_addAF	Benign	-0.20	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	17
DANN	Benign	0.90
DEOGEN2	Benign	0.39	T;T;T;.
Eigen	Benign	-0.80
Eigen_PC	Benign	-0.79
FATHMM_MKL	Benign	0.19	N
LIST_S2	Benign	0.52	T;.;T;D
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.088	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.76	.;N;N;.
PrimateAI	Benign	0.34	T
PROVEAN	Uncertain	-2.9	D;N;N;N
REVEL	Benign	0.071
Sift	Uncertain	0.0090	D;D;D;D
Sift4G	Uncertain	0.027	D;D;D;D
Polyphen		0.38	.;B;B;.
Vest4		0.13, 0.14
MutPred		0.086		Gain of methylation at K12 (P = 0.1138);Gain of methylation at K12 (P = 0.1138);Gain of methylation at K12 (P = 0.1138);.;
MVP		0.35
MPC		0.32
ClinPred		0.17	T
GERP RS		3.6
Varity_R		0.058
gMVP		0.27

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

LitVar

Other links and lift over

dbSNP: rs1684443587; hg19: chr2-121554922;