8-43122528-A-T

Variant names:

• chr8-43122528-A-T
• rs200742772
• NM_032237.5:c.704A>T
• POMK p.Asn235Ile

GermlineCancer (beta)

Variant summary

Our verdict is Uncertain significance.

0 Uncertain · Cold

-7

-6

-1

0

+5

+6

+9

+10

BenignB

Likely BenignLB

UncertainVUS

Likely PathogenicLP

PathogenicP

The variant received 0 classification points (ACGS-UK Somatic Oncogenicity v2025). O3_SupportingB3_Supporting

The NM_032237.5(POMK):c.704A>T (p.Asn235Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a cumulative frequency of 0.00000274 (AC=4) in the gnomAD database across 1,461,856 control chromosomes (no homozygotes observed). The grpmax filtering allele frequency (95% CI) is 0.00000072. In-silico predictor (REVEL) classifies this variant as likely benign. Splicing prediction tools (SpliceAI) predict no significant impact on normal splicing. The affected nucleotide is highly conserved across species (PhyloP 100-way vertebrate score: 8.78). No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Other variants at the same amino acid position have been reported in ClinVar (not pathogenic): p.N235S: Conflicting_classifications_of_pathogenicity (ClinVar VariationId 474196)

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: POMK NM_032237.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.78
• Publications: 0 publications found

Genes affected

POMK (HGNC:26267): (protein O-mannose kinase) This gene encodes a protein that may be involved in the presentation of the laminin-binding O-linked carbohydrate chain of alpha-dystroglycan (a-DG), which forms transmembrane linkages between the extracellular matrix and the exoskeleton. Some pathogens use this O-linked carbohydrate unit for host entry. Loss of function compound heterozygous mutations in this gene were found in a human patient affected by the Walker-Warburg syndrome (WWS) phenotype. Mice lacking this gene contain misplaced neurons (heterotopia) in some regions of the brain, possibly from defects in neuronal migration. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

POMK Gene-Disease associations (from GenCC):

• muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type a, 12

  Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp, Ambry Genetics, PanelApp Australia, G2P
• congenital muscular dystrophy with cerebellar involvement

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• limb-girdle muscular dystrophy due to POMK deficiency

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• muscular dystrophy-dystroglycanopathy, type A

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• anterior segment dysgenesis

  Inheritance: AD Classification: LIMITED Submitted by: PanelApp Australia

Classification according to ACGS-UK Somatic Oncogenicity v2025

Classification was made for transcript:

Our verdict: Uncertain_significance. The variant received 0 points.

Apply	Criterion Code & Title / Strength	Strength	Rationale / Clinical Context
	O3Absent or very rare in population		Very rare in gnomAD (popmax AF <0.01%) — O3 supporting; GnomAD effective popmax AF = 0.000001 — very rare (O3 supporting [+1])
	B3Computational evidence does not support deleterious effect		Computational evidence does not support a deleterious effect; Missense variant — primary computational scorer does not support an oncogenic/deleterious effect; supports B3

Variant Effect in Transcripts

Automated classification analysis was done for transcript: NM_032237.5. You can select a different transcript below to see updated classification assignments.

RefSeq Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	POMK NM_032237.5	MANE Select	c.704A>T p.Asn235Ile	missense	Exon 5 of 5	Prot: NP_115613.1 UniProt:
	POMK NM_001277971.2		c.704A>T p.Asn235Ile	missense	Exon 4 of 4	Prot: NP_001264900.1 UniProt:

POMK NM_032237.5

MANE Select

HGVSc / HGVSpc.704A>Tp.Asn235Ile

Exon rankExon 5 of 5

missense

Prot: NP_115613.1UniProt: Q9H5K3

POMK NM_001277971.2

HGVSc / HGVSpc.704A>Tp.Asn235Ile

Exon rankExon 4 of 4

missense

Prot: NP_001264900.1UniProt: Q9H5K3

Ensembl Transcripts

Sel.	Gene / Transcript	Tags	HGVSc / HGVSp	Effect	Exon rank	Protein / UniProt
	POMK ENST00000331373.10	TSL:2MANE Select	c.704A>T p.Asn235Ile	missense	Exon 5 of 5	Prot: ENSP00000331258.5 UniProt:
	POMK ENST00000676193.1		c.704A>T p.Asn235Ile	missense	Exon 4 of 4	Prot: ENSP00000502774.1 UniProt:
	POMK ENST00000936358.1		c.704A>T p.Asn235Ile	missense	Exon 5 of 6	Prot: ENSP00000606417.1 UniProt:

POMK ENST00000331373.10

TSL:2MANE Select

HGVSc / HGVSpc.704A>Tp.Asn235Ile

Exon rankExon 5 of 5

missense

Prot: ENSP00000331258.5UniProt: Q9H5K3

POMK ENST00000676193.1

HGVSc / HGVSpc.704A>Tp.Asn235Ile

Exon rankExon 4 of 4

missense

Prot: ENSP00000502774.1UniProt: Q9H5K3

POMK ENST00000936358.1

HGVSc / HGVSpc.704A>Tp.Asn235Ile

Exon rankExon 5 of 6

missense

Prot: ENSP00000606417.1UniProt: Q9H5K3

Frequencies

Allele frequencies (AF), counts (AC/AN), homozygotes and coverage

Common (AF > 0.05 / Hom > 5)

Rare (AF ≤ 0.0001 / Hom ≤ 1)

Source / population	AF	AC	Hom	AN	Coverage
Global population databases 3 sources Large-scale international reference populations
GnomAD3 genomes	AF:	AC:	Hom:	AN:	Cov:33
GnomAD4 exome	AF: 0.00000274	AC:4	Hom:0	AN:1461856	Cov:33
GnomAD4 genome	AF:	AC:	Hom:	AN:	Cov:33

Showing 3 sources

Case/control cohorts

Cohort	Cases			Controls
	AF	AC	AN	AF	AC	AN
BipEx(Bipolar disorder (including schizoaffective))	0.00	0	28420	0.0000347	1	28844
Epi25(Epilepsy)	0.00	0	41958	0.0000150	1	66888
SCHEMA(Schizophrenia)	0.00	0	67782	0.0000150	2	133194

Showing 3 cohortsAllele count / allele number. AF is computed from the counts for ASC (not provided by the source).

ClinVar

Not reported in ClinVar

Computational Scores

Algorithm	Calibrated pred.	Score	Prediction
AlphaGenome AVI	Pathogenic	21
AlphaMissense	Benign	0.23
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.094	T
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.54
FATHMM_MKL	Pathogenic	0.99	D
FuncVEP CTI	Pathogenic	0.60
GPN-Star LLR	N/A	-8.3
GPN-Star score	N/A	8.3
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.32	T
MetaSVM	Benign	-1.1	T
Mutation Taster	N/A	60/40	polymorphism
MutationAssessor	Benign	1.8	L
PhyloP100	Pathogenic	8.8
popEVE	Benign	-3.4
PrimateAI	Benign	0.43	T
PromoterAI	N/A	0.016	Neutral
PROVEAN	Pathogenic	-4.5	D
RBP_binding_hub_radar	N/A	0.0
RBP_regulation_power_radar	N/A	1.7
REVEL	Benign	0.25
Sift	Uncertain	0.0030	D
Sift4G	Benign	0.15	T
Varity_R	N/A	0.56
VESM-3B	Benign	-11

Showing 31 of 31 scores

Splicing Scores

Algorithm	Calibrated pred.	Score	Prediction
Pangolin (max)	Benign	0.010
SpliceAI score (max)	Benign	0.0	Details are displayed if max score is > 0.2

Showing 2 of 2 scores

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

MaveDB functional evidence

MaveDB is a public repository of laboratory assays that test the effect of thousands of variants at once — treat this as supporting research data and interpret it with great caution; it is not a clinical classification.

No MaveDB functional evidence found for this variant.

Other links and lift over

dbSNP: rs200742772;

hg19: chr8-42977671;

ACMG debug oncogenicity

ACGS debug oncogenicity

ACMG debug germline

Submit to ClinVar