22-20710808-G-A

Variant summary

Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PM2PP2PP3PP5_Very_Strong

The NM_058004.4(PI4KA):​c.5974C>T​(p.Pro1992Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).

Frequency

Genomes: not found (cov: 33)

Consequence

PI4KA
NM_058004.4 missense

Scores

6
6
6

Clinical Significance

Likely pathogenic criteria provided, multiple submitters, no conflicts P:2

Conservation

PhyloP100: 9.65
Variant links:
Genes affected
PI4KA (HGNC:8983): (phosphatidylinositol 4-kinase alpha) This gene encodes a phosphatidylinositol (PI) 4-kinase which catalyzes the first committed step in the biosynthesis of phosphatidylinositol 4,5-bisphosphate. The mammalian PI 4-kinases have been classified into two types, II and III, based on their molecular mass, and modulation by detergent and adenosine. The protein encoded by this gene is a type III enzyme that is not inhibited by adenosine. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Apr 2018]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 14 ACMG points.

PM1
In a domain PI3K/PI4K catalytic (size 278) in uniprot entity PI4KA_HUMAN there are 7 pathogenic changes around while only 3 benign (70%) in NM_058004.4
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PI4KA. . Gene score misZ 3.5271 (greater than the threshold 3.09). Trascript score misZ 4.6291 (greater than threshold 3.09). GenCC has associacion of gene with polymicrogyria, perisylvian, with cerebellar hypoplasia and arthrogryposis.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.783
PP5
Variant 22-20710808-G-A is Pathogenic according to our data. Variant chr22-20710808-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1675874.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
PI4KANM_058004.4 linkuse as main transcriptc.5974C>T p.Pro1992Ser missense_variant 52/55 ENST00000255882.11

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
PI4KAENST00000255882.11 linkuse as main transcriptc.5974C>T p.Pro1992Ser missense_variant 52/551 NM_058004.4 P1P42356-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
Cov.:
31
GnomAD4 genome
Cov.:
33

ClinVar

Significance: Likely pathogenic
Submissions summary: Pathogenic:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

Polymicrogyria, perisylvian, with cerebellar hypoplasia and arthrogryposis Pathogenic:1
Likely pathogenic, criteria provided, single submitterclinical testingInstitute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin BerlinSep 16, 2022- -
not provided Pathogenic:1
Likely pathogenic, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenJan 01, 2022- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.99
BayesDel_addAF
Uncertain
0.059
T
BayesDel_noAF
Benign
-0.15
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.73
D;.
Eigen
Uncertain
0.53
Eigen_PC
Uncertain
0.49
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.99
D;D
M_CAP
Benign
0.021
T
MetaRNN
Pathogenic
0.78
D;D
MetaSVM
Benign
-1.1
T
MutationTaster
Benign
1.0
D;D;D;D
PrimateAI
Pathogenic
0.80
T
PROVEAN
Pathogenic
-7.6
.;D
REVEL
Uncertain
0.41
Sift
Benign
0.10
.;T
Sift4G
Benign
0.068
T;T
Polyphen
0.97
.;D
Vest4
0.84
MVP
0.57
MPC
2.5
ClinPred
1.0
D
GERP RS
5.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.0
Varity_R
0.48
gMVP
0.79

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: chr22-21065096; API