rs753011255

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2PP2PP3_Moderate

The NM_000388.4(CASR):​c.960C>A​(p.Phe320Leu) 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 1,461,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F320I) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CASR
NM_000388.4 missense

Scores

5
9
5

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.154

Publications

4 publications found
Variant links:
Genes affected
CASR (HGNC:1514): (calcium sensing receptor) The protein encoded by this gene is a plasma membrane G protein-coupled receptor that senses small changes in circulating calcium concentration. The encoded protein couples this information to intracellular signaling pathways that modify parathyroid hormone secretion or renal cation handling, and thus this protein plays an essential role in maintaining mineral ion homeostasis. Mutations in this gene are a cause of familial hypocalciuric hypercalcemia, neonatal severe hyperparathyroidism, and autosomal dominant hypocalcemia. [provided by RefSeq, Aug 2017]
CASR Gene-Disease associations (from GenCC):
  • autosomal dominant hypocalcemia 1
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Illumina, ClinGen, Labcorp Genetics (formerly Invitae)
  • familial hypocalciuric hypercalcemia 1
    Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Illumina, Orphanet, Genomics England PanelApp
  • neonatal severe primary hyperparathyroidism
    Inheritance: AR, AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, Labcorp Genetics (formerly Invitae)
  • autosomal dominant hypocalcemia
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • epilepsy, idiopathic generalized, susceptibility to, 8
    Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
  • epilepsy
    Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in the CASR gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 114 curated pathogenic missense variants (we use a threshold of 10). The gene has 10 curated benign missense variants. Gene score misZ: 3.1237 (above the threshold of 3.09). Trascript score misZ: 4.8257 (above the threshold of 3.09). GenCC associations: The gene is linked to neonatal severe primary hyperparathyroidism, autosomal dominant hypocalcemia 1, familial hypocalciuric hypercalcemia 1, epilepsy, autosomal dominant hypocalcemia, epilepsy, idiopathic generalized, susceptibility to, 8.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.853

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CASRNM_000388.4 linkc.960C>A p.Phe320Leu missense_variant Exon 4 of 7 ENST00000639785.2 NP_000379.3 P41180-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CASRENST00000639785.2 linkc.960C>A p.Phe320Leu missense_variant Exon 4 of 7 1 NM_000388.4 ENSP00000491584.2 P41180-1
CASRENST00000498619.4 linkc.960C>A p.Phe320Leu missense_variant Exon 4 of 7 1 ENSP00000420194.1 P41180-2
CASRENST00000638421.1 linkc.960C>A p.Phe320Leu missense_variant Exon 4 of 7 5 ENSP00000492190.1 P41180-1
CASRENST00000490131.7 linkc.960C>A p.Phe320Leu missense_variant Exon 3 of 5 5 ENSP00000418685.2 A0A1X7SBX3

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD2 exomes
AF:
0.00000398
AC:
1
AN:
251074
AF XY:
0.00000736
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000882
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461884
Hom.:
0
Cov.:
34
AF XY:
0.00000138
AC XY:
1
AN XY:
727242
show subpopulations
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:
1112002
Other (OTH)
AF:
0.00
AC:
0
AN:
60396
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.525
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
32
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.96
BayesDel_addAF
Pathogenic
0.30
D
BayesDel_noAF
Pathogenic
0.19
CADD
Benign
0.56
DANN
Uncertain
0.98
DEOGEN2
Uncertain
0.75
D;D;.;.
Eigen
Benign
-0.50
Eigen_PC
Benign
-0.64
FATHMM_MKL
Uncertain
0.84
D
LIST_S2
Uncertain
0.92
.;D;D;D
M_CAP
Uncertain
0.24
D
MetaRNN
Pathogenic
0.85
D;D;D;D
MetaSVM
Uncertain
0.00020
D
MutationAssessor
Benign
1.5
L;L;L;.
PhyloP100
0.15
PrimateAI
Pathogenic
0.82
D
PROVEAN
Uncertain
-2.9
.;.;D;D
REVEL
Uncertain
0.62
Sift
Uncertain
0.013
.;.;D;D
Sift4G
Benign
0.17
.;.;T;T
Polyphen
1.0
D;D;.;.
Vest4
0.89, 0.89
MutPred
0.74
Loss of glycosylation at T317 (P = 0.0544);Loss of glycosylation at T317 (P = 0.0544);Loss of glycosylation at T317 (P = 0.0544);Loss of glycosylation at T317 (P = 0.0544);
MVP
0.83
MPC
1.5
ClinPred
0.82
D
GERP RS
-6.8
Varity_R
0.73
gMVP
0.89
Mutation Taster
=17/83
disease causing

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

Other links and lift over

dbSNP: rs753011255; hg19: chr3-121980842; API