1-44784391-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_153274.3(BEST4):​c.1241G>A​(p.Arg414His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000357 in 1,401,024 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 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000032 ( 0 hom. )

Consequence

BEST4
NM_153274.3 missense

Scores

1
8
10

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.830
Variant links:
Genes affected
BEST4 (HGNC:17106): (bestrophin 4) This gene is a member of the bestrophin gene family of anion channels. Bestrophin genes share a similar gene structure with highly conserved exon-intron boundaries, but with distinct 3' ends. Bestrophins are transmembrane proteins that contain a homologous region rich in aromatic residues, including an invariant arg-phe-pro motif. Mutation in one of the family members (bestrophin 1) is associated with vitelliform macular dystrophy. The bestrophin 4 gene is predominantly expressed in the colon. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.26646003).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
BEST4NM_153274.3 linkc.1241G>A p.Arg414His missense_variant Exon 9 of 9 ENST00000372207.4 NP_695006.1 Q8NFU0

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
BEST4ENST00000372207.4 linkc.1241G>A p.Arg414His missense_variant Exon 9 of 9 1 NM_153274.3 ENSP00000361281.3 Q8NFU0

Frequencies

GnomAD3 genomes
AF:
0.00000660
AC:
1
AN:
151592
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:
0.00
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:
0.00000320
AC:
4
AN:
1249432
Hom.:
0
Cov.:
35
AF XY:
0.00000165
AC XY:
1
AN XY:
607686
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000391
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000660
AC:
1
AN:
151592
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74018
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000756

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Nov 13, 2024
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.1241G>A (p.R414H) alteration is located in exon 9 (coding exon 9) of the BEST4 gene. This alteration results from a G to A substitution at nucleotide position 1241, causing the arginine (R) at amino acid position 414 to be replaced by a histidine (H). 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
0.11
BayesDel_addAF
Uncertain
0.062
T
BayesDel_noAF
Benign
-0.15
CADD
Benign
22
DANN
Uncertain
1.0
DEOGEN2
Benign
0.40
T
Eigen
Benign
-0.23
Eigen_PC
Benign
-0.11
FATHMM_MKL
Benign
0.61
D
LIST_S2
Benign
0.75
T
M_CAP
Pathogenic
0.50
D
MetaRNN
Benign
0.27
T
MetaSVM
Uncertain
0.56
D
MutationAssessor
Benign
1.9
L
PrimateAI
Uncertain
0.79
T
PROVEAN
Uncertain
-3.1
D
REVEL
Uncertain
0.37
Sift
Uncertain
0.024
D
Sift4G
Uncertain
0.0050
D
Polyphen
0.0030
B
Vest4
0.11
MutPred
0.56
Gain of helix (P = 0.0078);
MVP
0.70
MPC
1.0
ClinPred
0.96
D
GERP RS
3.3
Varity_R
0.11
gMVP
0.50

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.

Other links and lift over

dbSNP: rs1051850223; hg19: chr1-45250063; API