17-68600299-AGCGCCTCCTGGCTGGCCAG-A

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_017565.4(FAM20A):​c.349_367delCTGGCCAGCCAGGAGGCGC​(p.Leu117fs) variant causes a frameshift change. The variant allele was found at a frequency of 0.00000253 in 1,580,480 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

FAM20A
NM_017565.4 frameshift

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, single submitter P:1

Conservation

PhyloP100: 3.80
Variant links:
Genes affected
FAM20A (HGNC:23015): (FAM20A golgi associated secretory pathway pseudokinase) This locus encodes a protein that is likely secreted and may function in hematopoiesis. A mutation at this locus has been associated with amelogenesis imperfecta and gingival hyperplasia syndrome. Alternatively spliced transcript variants have been identified. [provided by RefSeq, Aug 2011]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 17-68600299-AGCGCCTCCTGGCTGGCCAG-A is Pathogenic according to our data. Variant chr17-68600299-AGCGCCTCCTGGCTGGCCAG-A is described in ClinVar as [Pathogenic]. Clinvar id is 1322863.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
FAM20ANM_017565.4 linkuse as main transcriptc.349_367delCTGGCCAGCCAGGAGGCGC p.Leu117fs frameshift_variant 1/11 ENST00000592554.2 NP_060035.2 Q96MK3L8B8N7Q8IYA5

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
FAM20AENST00000592554.2 linkuse as main transcriptc.349_367delCTGGCCAGCCAGGAGGCGC p.Leu117fs frameshift_variant 1/111 NM_017565.4 ENSP00000468308.1 Q96MK3
FAM20AENST00000590074.5 linkuse as main transcriptn.277_295delCTGGCCAGCCAGGAGGCGC non_coding_transcript_exon_variant 1/122 ENSP00000464910.1 K7EIV7
LINC01482ENST00000587999.1 linkuse as main transcriptn.198+2155_198+2173delCGCCTCCTGGCTGGCCAGG intron_variant 3
LINC01482ENST00000589610.5 linkuse as main transcriptn.40+8423_40+8441delCGCCTCCTGGCTGGCCAGG intron_variant 3

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152030
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:
0.000194
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.0000160
AC:
3
AN:
187686
Hom.:
0
AF XY:
0.00000977
AC XY:
1
AN XY:
102406
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000212
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000210
AC:
3
AN:
1428450
Hom.:
0
AF XY:
0.00000283
AC XY:
2
AN XY:
707682
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000803
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
152030
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74248
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.000194
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.00

ClinVar

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

Submissions by phenotype

Amelogenesis imperfecta type 1G Pathogenic:1
Pathogenic, criteria provided, single submitterclinical testingRevvity Omics, RevvityNov 04, 2020- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

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: rs766926330; hg19: chr17-66596440; API