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GeneBe

chr21-41322951-C-T

Variant summary

Our verdict is Benign. Variant got -15 ACMG points: 0P and 15B. BP4_StrongBP6_ModerateBP7BS1BS2

The NM_058186.4(FAM3B):​c.48C>T​(p.Phe16=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00189 in 1,613,726 control chromosomes in the GnomAD database, including 49 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0094 ( 31 hom., cov: 33)
Exomes 𝑓: 0.0011 ( 18 hom. )

Consequence

FAM3B
NM_058186.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -1.41
Variant links:
Genes affected
FAM3B (HGNC:1253): (FAM3 metabolism regulating signaling molecule B) Involved in insulin secretion. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -15 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.75).
BP6
Variant 21-41322951-C-T is Benign according to our data. Variant chr21-41322951-C-T is described in ClinVar as [Benign]. Clinvar id is 714834.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=-1.4 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00941 (1433/152354) while in subpopulation AFR AF= 0.0295 (1227/41586). AF 95% confidence interval is 0.0281. There are 31 homozygotes in gnomad4. There are 729 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 31 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
FAM3BNM_058186.4 linkuse as main transcriptc.48C>T p.Phe16= synonymous_variant 2/8 ENST00000357985.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
FAM3BENST00000357985.7 linkuse as main transcriptc.48C>T p.Phe16= synonymous_variant 2/81 NM_058186.4 P1P58499-1

Frequencies

GnomAD3 genomes
AF:
0.00936
AC:
1425
AN:
152236
Hom.:
29
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0294
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0109
Gnomad ASJ
AF:
0.000864
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000191
Gnomad OTH
AF:
0.0110
GnomAD3 exomes
AF:
0.00283
AC:
711
AN:
251064
Hom.:
11
AF XY:
0.00201
AC XY:
273
AN XY:
135748
show subpopulations
Gnomad AFR exome
AF:
0.0308
Gnomad AMR exome
AF:
0.00402
Gnomad ASJ exome
AF:
0.00109
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000431
Gnomad OTH exome
AF:
0.00163
GnomAD4 exome
AF:
0.00111
AC:
1615
AN:
1461372
Hom.:
18
Cov.:
32
AF XY:
0.000963
AC XY:
700
AN XY:
727004
show subpopulations
Gnomad4 AFR exome
AF:
0.0283
Gnomad4 AMR exome
AF:
0.00411
Gnomad4 ASJ exome
AF:
0.00207
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000927
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000196
Gnomad4 OTH exome
AF:
0.00308
GnomAD4 genome
AF:
0.00941
AC:
1433
AN:
152354
Hom.:
31
Cov.:
33
AF XY:
0.00978
AC XY:
729
AN XY:
74514
show subpopulations
Gnomad4 AFR
AF:
0.0295
Gnomad4 AMR
AF:
0.0109
Gnomad4 ASJ
AF:
0.000864
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000191
Gnomad4 OTH
AF:
0.0109
Alfa
AF:
0.00460
Hom.:
7
Bravo
AF:
0.0106
Asia WGS
AF:
0.00520
AC:
18
AN:
3478
EpiCase
AF:
0.000491
EpiControl
AF:
0.000415

ClinVar

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

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingInvitaeAug 02, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.75
CADD
Benign
3.8
DANN
Benign
0.71
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.6

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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: rs61734881; hg19: chr21-42694878; API