9-127868326-G-A

Position:

chr9-127868326-G-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_000476.3(AK1):c.511C>T(p.Arg171Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00011 in 1,585,868 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 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

AK1
NM_000476.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.78

Variant links:

Genes affected

AK1 (HGNC:361): (adenylate kinase 1) This gene encodes an adenylate kinase enzyme involved in energy metabolism and homeostasis of cellular adenine nucleotide ratios in different intracellular compartments. This gene is highly expressed in skeletal muscle, brain and erythrocytes. Certain mutations in this gene resulting in a functionally inadequate enzyme are associated with a rare genetic disorder causing nonspherocytic hemolytic anemia. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms. This gene shares readthrough transcripts with the upstream ST6GALNAC6 gene. [provided by RefSeq, Jan 2022]

AK1 links:

ST6GALNAC4-ST6GALNAC6-AK1 (HGNC:):

ST6GALNAC4-ST6GALNAC6-AK1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.15481687).

BS1

Variant frequency is greater than expected in population sas. gnomad4_exome allele frequency = 0.000116 (166/1433528) while in subpopulation SAS AF= 0.000326 (27/82874). AF 95% confidence interval is 0.000229. There are 0 homozygotes in gnomad4_exome. There are 93 alleles in male gnomad4_exome subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
AK1	NM_000476.3 linkuse as main transcript	c.511C>T	p.Arg171Cys	missense_variant	6/7	ENST00000644144.2	NP_000467.1
ST6GALNAC4-ST6GALNAC6-AK1	NR_174625.1 linkuse as main transcript	n.3830C>T		non_coding_transcript_exon_variant	14/15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
AK1	ENST00000644144.2 linkuse as main transcript	c.511C>T	p.Arg171Cys	missense_variant	6/7		NM_000476.3	ENSP00000494600	P1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000126

AC:

AN:

205948

Hom.:

AF XY:

0.000108

AC XY:

AN XY:

110936

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000169

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000412

Gnomad FIN exome

AF:

0.0000565

Gnomad NFE exome

AF:

0.000101

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000116

AC:

166

AN:

1433528

Hom.:

Cov.:

AF XY:

0.000131

AC XY:

AN XY:

710662

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000174

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000326

Gnomad4 FIN exome

AF:

0.0000391

Gnomad4 NFE exome

AF:

0.000114

Gnomad4 OTH exome

AF:

0.0000675

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152340

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74500

show subpopulations

Gnomad4 AFR

AF:

0.000120

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000582

Hom.:

Bravo

AF:

0.0000642

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000107

AC:

Asia WGS

AF:

0.00115

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 18, 2022

The c.511C>T (p.R171C) alteration is located in exon 6 (coding exon 5) of the AK1 gene. This alteration results from a C to T substitution at nucleotide position 511, causing the arginine (R) at amino acid position 171 to be replaced by a cysteine (C). 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

0.16

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.44

T;T;T;.

Eigen

Benign

-0.047

Eigen_PC

Benign

0.038

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.90

.;.;D;D

M_CAP

Uncertain

0.094

MetaRNN

Benign

0.15

T;T;T;T

MetaSVM

Benign

-0.64

MutationAssessor

Benign

2.0

M;M;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-2.0

N;.;N;N

REVEL

Uncertain

0.31

Sift

Benign

0.18

T;.;T;T

Sift4G

Benign

0.19

T;.;T;T

Polyphen

0.34

B;B;B;.

Vest4

0.82

MVP

0.45

MPC

0.41

ClinPred

0.18

GERP RS

4.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.50

gMVP

0.82

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over