chr2-120955446-C-A

Variant names:

• chr2-120955446-C-A
• rs6718382
• NM_001374353.1:c.643+16C>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BP6_Very_Strong

The NM_001374353.1(GLI2):​c.643+16C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000591 in 152,168 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000059 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000031 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: GLI2 NM_001374353.1 intron
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -0.622
• Publications: 9 publications found

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]

GLI2 Gene-Disease associations (from GenCC):

• holoprosencephaly 9

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• postaxial polydactyly-anterior pituitary anomalies-facial dysmorphism syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Illumina, Ambry Genetics
• combined pituitary hormone deficiencies, genetic form

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• holoprosencephaly

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP6: Variant 2-120955446-C-A is Benign according to our data. Variant chr2-120955446-C-A is described in ClinVar as Likely_benign. ClinVar VariationId is 2053167.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GLI2	NM_001374353.1	c.643+16C>A		intron_variant	Intron 5 of 13	ENST00000361492.9	NP_001361282.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GLI2	ENST00000361492.9	c.643+16C>A		intron_variant	Intron 5 of 13	1	NM_001374353.1	ENSP00000354586.5

Frequencies

GnomAD3 genomes AF: 0.0000591 AC: 9 AN: 152168 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000194

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000250 AC: 5 AN: 200010 AF XY: 0.0000367

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000105

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000114

Gnomad OTH exome AF: 0.00

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000307 AC: 43 AN: 1398736 Hom.: 0 Cov.: 23 AF XY: 0.0000289 AC XY: 20 AN XY: 692666

African (AFR) AF: 0.00 AC: 0 AN: 31966

American (AMR) AF: 0.000154 AC: 6 AN: 38956

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24222

East Asian (EAS) AF: 0.0000261 AC: 1 AN: 38362

South Asian (SAS) AF: 0.00 AC: 0 AN: 81210

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5556

European-Non Finnish (NFE) AF: 0.0000318 AC: 34 AN: 1070154

Other (OTH) AF: 0.0000347 AC: 2 AN: 57686

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152168 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74320

African (AFR) AF: 0.0000724 AC: 3 AN: 41460

American (AMR) AF: 0.000262 AC: 4 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000194 AC: 1 AN: 5144

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68030

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 7811

ClinVar

Significance: Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:1

Aug 14, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Variant summary: GLI2 c.643+16C>A alters a non-conserved nucleotide located at a position not widely known to affect splicing. Consensus agreement among computation tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 2.5e-05 in 200010 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.643+16C>A in individuals affected with GLI2-Related Disorders and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 2053167). Based on the evidence outlined above, the variant was classified as likely benign. -

Holoprosencephaly 9;C4014479:Postaxial polydactyly-anterior pituitary anomalies-facial dysmorphism syndrome Benign:1

Apr 10, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.46
DANN	Benign	0.27
PhyloP100		-0.62

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

Other links and lift over

dbSNP: rs6718382; hg19: chr2-121713022;