7-99181971-C-A

Variant names:

• chr7-99181971-C-A
• rs1060502573
• NM_001145715.3:c.1229G>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001145715.3(KPNA7):​c.1229G>T​(p.Gly410Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000387 in 1,551,196 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. G410G) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000029 (0 hom.)
• Consequence: KPNA7 NM_001145715.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 3.24
• Publications: 0 publications found

Genes affected

KPNA7 (HGNC:21839): (karyopherin subunit alpha 7) The transport of molecules between the nucleus and the cytoplasm in eukaryotic cells is mediated by the nuclear pore complex (NPC), which consists of 60-100 proteins. Small molecules (up to 70 kD) can pass through the nuclear pore by nonselective diffusion while larger molecules are transported by an active process. The protein encoded by this gene belongs to the importin alpha family, and is involved in nuclear protein import, but exhibits different nuclear localization signal binding specificity compared to other members of the family. A pseudogene of this gene has been defined on chromosome 5. [provided by RefSeq, Jul 2016]

KPNA7 Gene-Disease associations (from GenCC):

• oocyte/zygote/embryo maturation arrest 17

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• partial corpus callosum agenesis-cerebellar vermis hypoplasia with posterior fossa cysts syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.854

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001145715.3. 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
	KPNA7	NM_001145715.3	MANE Select	c.1229G>T	p.Gly410Val	missense	Exon 9 of 11	NP_001139187.1	A9QM74

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KPNA7	ENST00000327442.7	TSL:1 MANE Select	c.1229G>T	p.Gly410Val	missense	Exon 9 of 11	ENSP00000330878.6	A9QM74
	KPNA7	ENST00000681060.1		c.1229G>T	p.Gly410Val	missense	Exon 9 of 11	ENSP00000506489.1	A9QM74
	KPNA7	ENST00000893183.1		c.1229G>T	p.Gly410Val	missense	Exon 9 of 11	ENSP00000563242.1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152134 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000656

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000286 AC: 4 AN: 1399062 Hom.: 0 Cov.: 31 AF XY: 0.00000290 AC XY: 2 AN XY: 689972

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 31592

American (AMR) AF: 0.00 AC: 0 AN: 35698

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25180

East Asian (EAS) AF: 0.00 AC: 0 AN: 35730

South Asian (SAS) AF: 0.00 AC: 0 AN: 79212

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 49282

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5696

European-Non Finnish (NFE) AF: 0.00000371 AC: 4 AN: 1078684

Other (OTH) AF: 0.00 AC: 0 AN: 57988

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000782701), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152134 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74308

African (AFR) AF: 0.00 AC: 0 AN: 41436

American (AMR) AF: 0.0000656 AC: 1 AN: 15254

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000416

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.62
BayesDel_addAF	Uncertain	0.018	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.25	T
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Uncertain	0.92	D
M_CAP	Benign	0.066	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Uncertain	-0.18	T
MutationAssessor	Pathogenic	3.3	M
PhyloP100		3.2
PrimateAI	Benign	0.36	T
PROVEAN	Pathogenic	-8.1	D
REVEL	Uncertain	0.40
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0030	D
Polyphen		1.0	D
Vest4		0.56
MutPred		0.67		Loss of catalytic residue at V411 (P = 0.1094)
MVP		0.42
ClinPred		1.0	D
GERP RS		5.4
Varity_R		0.89
gMVP		0.71
Mutation Taster		=65/35	polymorphism

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

Other links and lift over

dbSNP: rs1060502573; hg19: chr7-98779594;