1-33021668-C-A

Variant names:

• chr1-33021668-C-A
• rs41301072
• NM_001625.4:c.255G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001625.4(AK2):​c.255G>T​(p.Lys85Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,828 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. K85K) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: AK2 NM_001625.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.742
• Publications: 0 publications found

Genes affected

AK2 (HGNC:362): (adenylate kinase 2) Adenylate kinases are involved in regulating the adenine nucleotide composition within a cell by catalyzing the reversible transfer of phosphate groups among adenine nucleotides. Three isozymes of adenylate kinase, namely 1, 2, and 3, have been identified in vertebrates; this gene encodes isozyme 2. Expression of these isozymes is tissue-specific and developmentally regulated. Isozyme 2 is localized in the mitochondrial intermembrane space and may play a role in apoptosis. Mutations in this gene are the cause of reticular dysgenesis. Alternate splicing results in multiple transcript variants. Pseudogenes of this gene are found on chromosomes 1 and 2.[provided by RefSeq, Nov 2010]

AK2 Gene-Disease associations (from GenCC):

• reticular dysgenesis

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

ENSG00000236065 (HGNC:58388):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20885381).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001625.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AK2	NM_001625.4	MANE Select	c.255G>T	p.Lys85Asn	missense	Exon 3 of 6	NP_001616.1	P54819-1
	AK2	NM_001319141.3		c.255G>T	p.Lys85Asn	missense	Exon 3 of 8	NP_001306070.1	F8W1A4
	AK2	NM_013411.5		c.255G>T	p.Lys85Asn	missense	Exon 3 of 7	NP_037543.1	P54819-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AK2	ENST00000672715.1	MANE Select	c.255G>T	p.Lys85Asn	missense	Exon 3 of 6	ENSP00000499935.1	P54819-1
	AK2	ENST00000373449.7	TSL:1	c.255G>T	p.Lys85Asn	missense	Exon 3 of 7	ENSP00000362548.2	P54819-2
	AK2	ENST00000354858.11	TSL:1	c.129G>T	p.Lys43Asn	missense	Exon 2 of 5	ENSP00000346921.7	A0A5K1VW67

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461828 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727220

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111946

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.064	T
BayesDel_noAF	Benign	-0.33
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.16	T
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.24
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.21	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.73	N
PhyloP100		0.74
PrimateAI	Uncertain	0.59	T
PROVEAN	Benign	-0.38	N
REVEL	Benign	0.17
Sift	Benign	0.37	T
Sift4G	Benign	0.28	T
Polyphen		0.0010	B
Vest4		0.35
MutPred		0.40		Loss of ubiquitination at K85 (P = 0.0218)
MVP		0.62
MPC		0.26
ClinPred		0.72	D
GERP RS		2.6
Varity_R		0.21
gMVP		0.77
Mutation Taster		=49/51	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs41301072; hg19: chr1-33487269;