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GeneBe

rs143835330

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 1P and 8B. PP2BP4_StrongBS2

The NM_001388419.1(KALRN):c.6766C>A(p.Pro2256Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000212 in 1,614,170 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/16 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00022 ( 4 hom. )

Consequence

KALRN
NM_001388419.1 missense

Scores

4
14

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.200
Variant links:
Genes affected
KALRN (HGNC:4814): (kalirin RhoGEF kinase) Huntington's disease (HD), a neurodegenerative disorder characterized by loss of striatal neurons, is caused by an expansion of a polyglutamine tract in the HD protein huntingtin. This gene encodes a protein that interacts with the huntingtin-associated protein 1, which is a huntingtin binding protein that may function in vesicle trafficking. [provided by RefSeq, Apr 2016]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -7 ACMG points.

PP2
Missense variant where missense usually causes diseases, KALRN
BP4
Computational evidence support a benign effect (MetaRNN=0.0075342655).
BS2
High AC in GnomAd at 20 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
KALRNNM_001388419.1 linkuse as main transcriptc.6766C>A p.Pro2256Thr missense_variant 48/60 ENST00000682506.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
KALRNENST00000682506.1 linkuse as main transcriptc.6766C>A p.Pro2256Thr missense_variant 48/60 NM_001388419.1 A2

Frequencies

GnomAD3 genomes
AF:
0.000131
AC:
20
AN:
152174
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00328
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000294
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000227
AC:
57
AN:
251476
Hom.:
1
AF XY:
0.000191
AC XY:
26
AN XY:
135912
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00305
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000221
AC:
323
AN:
1461878
Hom.:
4
Cov.:
31
AF XY:
0.000227
AC XY:
165
AN XY:
727242
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00804
Gnomad4 SAS exome
AF:
0.0000116
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
8.99e-7
Gnomad4 OTH exome
AF:
0.0000331
GnomAD4 genome
AF:
0.000131
AC:
20
AN:
152292
Hom.:
0
Cov.:
32
AF XY:
0.000148
AC XY:
11
AN XY:
74468
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00328
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000294
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.0000165
Hom.:
0
Bravo
AF:
0.000102
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000264
AC:
32
Asia WGS
AF:
0.00289
AC:
10
AN:
3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.13
BayesDel_addAF
Benign
-0.46
T
BayesDel_noAF
Benign
-0.44
Cadd
Benign
19
Dann
Benign
0.92
DEOGEN2
Benign
0.038
T;.
Eigen
Benign
-0.22
Eigen_PC
Benign
-0.074
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Uncertain
0.90
D;D
M_CAP
Benign
0.0074
T
MetaRNN
Benign
0.0075
T;T
MetaSVM
Benign
-1.0
T
MutationTaster
Benign
0.52
D;D;N;N;N
PrimateAI
Benign
0.42
T
PROVEAN
Uncertain
-3.6
D;D
REVEL
Benign
0.085
Sift
Benign
0.26
T;T
Sift4G
Uncertain
0.036
D;T
Vest4
0.28
MVP
0.57
ClinPred
0.032
T
GERP RS
3.4

Splicing

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.

Other links and lift over

dbSNP: rs143835330; hg19: chr3-124390569; API