chr12-45050749-T-G

Position:

• chr12-45050749-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001004329.3(DBX2):​c.179A>C​(p.His60Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000743 in 1,345,578 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: 7.4e-7 (0 hom.)
• Consequence: DBX2 NM_001004329.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.329

Genes affected

DBX2 (HGNC:33186): (developing brain homeobox 2) Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to be located in nucleus. Predicted to be part of chromatin. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11243561).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DBX2	NM_001004329.3	c.179A>C	p.His60Pro	missense_variant	1/4	ENST00000332700.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DBX2	ENST00000332700.6	c.179A>C	p.His60Pro	missense_variant	1/4	2	NM_001004329.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 7.43e-7 AC: 1 AN: 1345578 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 663388

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000368

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.: 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

Jun 11, 2021

The c.179A>C (p.H60P) alteration is located in exon 1 (coding exon 1) of the DBX2 gene. This alteration results from a A to C substitution at nucleotide position 179, causing the histidine (H) at amino acid position 60 to be replaced by a proline (P). 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	Benign	0.046
BayesDel_addAF	Benign	-0.084	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	2.4
DANN	Benign	0.77
DEOGEN2	Benign	0.019	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.010	N
LIST_S2	Benign	0.30	T
M_CAP	Pathogenic	0.46	D
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-0.56	T
MutationAssessor	Benign	1.0	L
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.79	T
PROVEAN	Benign	-1.2	N
REVEL	Benign	0.20
Sift	Benign	0.42	T
Sift4G	Benign	0.29	T
Polyphen		0.0	B
Vest4		0.18
MutPred		0.38		Gain of helix (P = 0.0022);
MVP		0.29
MPC		0.23
ClinPred		0.076	T
GERP RS		1.3
Varity_R		0.092
gMVP		0.30

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: chr12-45444532;