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15-76949072-G-A

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4_ModerateBP6_ModerateBP7

The NM_002902.3(RCN2):​c.804G>A​(p.Ala268=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000377 in 1,590,102 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0020 ( 1 hom., cov: 32)
Exomes 𝑓: 0.00020 ( 1 hom. )

Consequence

RCN2
NM_002902.3 splice_region, synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.637
Variant links:
Genes affected
RCN2 (HGNC:9935): (reticulocalbin 2) The protein encoded by this gene is a calcium-binding protein located in the lumen of the ER. The protein contains six conserved regions with similarity to a high affinity Ca(+2)-binding motif, the EF-hand. This gene maps to the same region as type 4 Bardet-Biedl syndrome, suggesting a possible causative role for this gene in the disorder. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2012]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.43).
BP6
Variant 15-76949072-G-A is Benign according to our data. Variant chr15-76949072-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 2645587.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=0.637 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
RCN2NM_002902.3 linkuse as main transcriptc.804G>A p.Ala268= splice_region_variant, synonymous_variant 7/7 ENST00000394885.8
RCN2NM_001271837.2 linkuse as main transcriptc.858G>A p.Ala286= splice_region_variant, synonymous_variant 8/8

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
RCN2ENST00000394885.8 linkuse as main transcriptc.804G>A p.Ala268= splice_region_variant, synonymous_variant 7/71 NM_002902.3 P1Q14257-1
RCN2ENST00000320963.9 linkuse as main transcriptc.858G>A p.Ala286= splice_region_variant, synonymous_variant 8/85 Q14257-2
RCN2ENST00000394883.3 linkuse as main transcriptc.501G>A p.Ala167= splice_region_variant, synonymous_variant 5/55

Frequencies

GnomAD3 genomes
AF:
0.00201
AC:
306
AN:
152088
Hom.:
1
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00722
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000393
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:
0.00
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.000535
AC:
123
AN:
230118
Hom.:
1
AF XY:
0.000361
AC XY:
45
AN XY:
124772
show subpopulations
Gnomad AFR exome
AF:
0.00776
Gnomad AMR exome
AF:
0.0000348
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.0000383
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.000361
GnomAD4 exome
AF:
0.000204
AC:
294
AN:
1437896
Hom.:
1
Cov.:
30
AF XY:
0.000190
AC XY:
136
AN XY:
714814
show subpopulations
Gnomad4 AFR exome
AF:
0.00830
Gnomad4 AMR exome
AF:
0.0000767
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000244
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000544
Gnomad4 OTH exome
AF:
0.000286
GnomAD4 genome
AF:
0.00201
AC:
306
AN:
152206
Hom.:
1
Cov.:
32
AF XY:
0.00184
AC XY:
137
AN XY:
74416
show subpopulations
Gnomad4 AFR
AF:
0.00720
Gnomad4 AMR
AF:
0.000393
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.000340
Hom.:
0
Bravo
AF:
0.00213
Asia WGS
AF:
0.000577
AC:
2
AN:
3478

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingCeGaT Center for Human Genetics TuebingenMar 01, 2022RCN2: BP4, BP7 -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.43
CADD
Benign
9.7
DANN
Benign
0.64

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: rs58665121; hg19: chr15-77241413; COSMIC: COSV58031329; COSMIC: COSV58031329; API