4-41745938-C-T
Position:
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4
The NM_003924.4(PHOX2B):c.814G>A(p.Gly272Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000127 in 1,575,008 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 Uncertain significance (★★).
Frequency
Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 7.0e-7 ( 0 hom. )
Consequence
PHOX2B
NM_003924.4 missense
NM_003924.4 missense
Scores
2
5
12
Clinical Significance
Conservation
PhyloP100: 1.19
Genes affected
PHOX2B (HGNC:9143): (paired like homeobox 2B) The DNA-associated protein encoded by this gene is a member of the paired family of homeobox proteins localized to the nucleus. The protein functions as a transcription factor involved in the development of several major noradrenergic neuron populations and the determination of neurotransmitter phenotype. The gene product is linked to enhancement of second messenger-mediated activation of the dopamine beta-hydroylase, c-fos promoters and several enhancers, including cyclic amp-response element and serum-response element. Expansion of a 20 amino acid polyalanine tract in this protein by 5-13 aa has been associated with congenital central hypoventilation syndrome. [provided by RefSeq, Jul 2016]
Genome browser will be placed here
ACMG classification
Classification made for transcript
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=0.28535914).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
PHOX2B | NM_003924.4 | c.814G>A | p.Gly272Ser | missense_variant | 3/3 | ENST00000226382.4 | NP_003915.2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
PHOX2B | ENST00000226382.4 | c.814G>A | p.Gly272Ser | missense_variant | 3/3 | 1 | NM_003924.4 | ENSP00000226382.2 |
Frequencies
GnomAD3 genomes AF: 0.00000663 AC: 1AN: 150866Hom.: 0 Cov.: 32
GnomAD3 genomes
AF:
AC:
1
AN:
150866
Hom.:
Cov.:
32
Gnomad AFR
AF:
Gnomad AMI
AF:
Gnomad AMR
AF:
Gnomad ASJ
AF:
Gnomad EAS
AF:
Gnomad SAS
AF:
Gnomad FIN
AF:
Gnomad MID
AF:
Gnomad NFE
AF:
Gnomad OTH
AF:
GnomAD4 exome AF: 7.02e-7 AC: 1AN: 1424142Hom.: 0 Cov.: 31 AF XY: 0.00000141 AC XY: 1AN XY: 708204
GnomAD4 exome
AF:
AC:
1
AN:
1424142
Hom.:
Cov.:
31
AF XY:
AC XY:
1
AN XY:
708204
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome AF: 0.00000663 AC: 1AN: 150866Hom.: 0 Cov.: 32 AF XY: 0.0000136 AC XY: 1AN XY: 73622
GnomAD4 genome
AF:
AC:
1
AN:
150866
Hom.:
Cov.:
32
AF XY:
AC XY:
1
AN XY:
73622
Gnomad4 AFR
AF:
Gnomad4 AMR
AF:
Gnomad4 ASJ
AF:
Gnomad4 EAS
AF:
Gnomad4 SAS
AF:
Gnomad4 FIN
AF:
Gnomad4 NFE
AF:
Gnomad4 OTH
AF:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Haddad syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 18, 2023 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 467750). This variant has not been reported in the literature in individuals affected with PHOX2B-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces glycine, which is neutral and non-polar, with serine, which is neutral and polar, at codon 272 of the PHOX2B protein (p.Gly272Ser). - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 14, 2023 | The p.G272S variant (also known as c.814G>A), located in coding exon 3 of the PHOX2B gene, results from a G to A substitution at nucleotide position 814. The glycine at codon 272 is replaced by serine, an amino acid with similar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Uncertain
D
LIST_S2
Benign
T
M_CAP
Pathogenic
D
MetaRNN
Benign
T
MetaSVM
Benign
T
MutationAssessor
Benign
L
PrimateAI
Pathogenic
D
PROVEAN
Benign
N
REVEL
Uncertain
Sift
Uncertain
D
Sift4G
Benign
T
Polyphen
B
Vest4
MutPred
Gain of glycosylation at G272 (P = 0.0049);
MVP
MPC
ClinPred
T
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at