NM_198428.3:c.2105C>A

Variant names:

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS1

The NM_198428.3(BBS9):c.2105C>A(p.Thr702Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000123 in 1,614,102 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T702T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00071 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000062 ( 1 hom. )

Consequence

BBS9
NM_198428.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:2

Conservation

PhyloP100: 7.35

Publications

2 publications found

Variant links:

Genes affected

BBS9 (HGNC:30000): (Bardet-Biedl syndrome 9) This gene is downregulated by parathyroid hormone in osteoblastic cells, and therefore is thought to be involved in parathyroid hormone action in bones. The exact function of this gene has not yet been determined. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Jan 2017]

BBS9 Gene-Disease associations (from GenCC):

Bardet-Biedl syndrome 9
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Genomics England PanelApp
BBS9-related ciliopathy
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
Bardet-Biedl syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

BBS9 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -7 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.11310014).

BP6

Variant 7-33388134-C-A is Benign according to our data. Variant chr7-33388134-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 194995.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000709 (108/152282) while in subpopulation AFR AF = 0.00257 (107/41564). AF 95% confidence interval is 0.00218. There are 0 homozygotes in GnomAd4. There are 46 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198428.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BBS9	NM_198428.3	MANE Select	c.2105C>A	p.Thr702Asn	missense	Exon 19 of 23	NP_940820.1	Q3SYG4-1
BBS9	NM_001348041.4		c.2105C>A	p.Thr702Asn	missense	Exon 19 of 23	NP_001334970.1	A0A5F9ZH14
BBS9	NM_001348036.1		c.2105C>A	p.Thr702Asn	missense	Exon 19 of 23	NP_001334965.1	Q3SYG4-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
BBS9	ENST00000242067.11	TSL:1 MANE Select	c.2105C>A	p.Thr702Asn	missense	Exon 19 of 23	ENSP00000242067.6	Q3SYG4-1
BBS9	ENST00000434373.3	TSL:1	c.803C>A	p.Thr268Asn	missense	Exon 8 of 11	ENSP00000388114.1	H7BZ69
BBS9	ENST00000433714.5	TSL:1	n.*866C>A		non_coding_transcript_exon	Exon 20 of 24	ENSP00000412159.1	F8WCG5

Frequencies

GnomAD3 genomes

AF:

0.000703

AC:

107

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00256

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

GnomAD2 exomes

AF:

0.000215

AC:

AN:

251438

AF XY:

0.000199

show subpopulations

Gnomad AFR exome

AF:

0.00295

Gnomad AMR exome

AF:

0.000116

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000109

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000616

AC:

AN:

1461820

Hom.:

Cov.:

AF XY:

0.0000591

AC XY:

AN XY:

727216

show subpopulations

African (AFR)

AF:

0.00212

AC:

AN:

33478

American (AMR)

AF:

0.000201

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39688

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111962

Other (OTH)

AF:

0.0000497

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000709

AC:

108

AN:

152282

Hom.:

Cov.:

AF XY:

0.000618

AC XY:

AN XY:

74462

show subpopulations

African (AFR)

AF:

0.00257

AC:

107

AN:

41564

American (AMR)

AF:

0.0000654

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.521

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000322

Hom.:

Bravo

AF:

0.000835

ESP6500AA

AF:

0.00295

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000272

AC:

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (2)

Bardet-Biedl syndrome (1)

BBS9-related disorder (1)

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.75

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.34

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

Eigen

Pathogenic

0.77

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.021

MetaRNN

Benign

0.11

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.4

PhyloP100

7.4

PrimateAI

Uncertain

0.65

PROVEAN

Pathogenic

-4.5

REVEL

Uncertain

0.32

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.94

MVP

0.51

MPC

0.40

ClinPred

0.19

GERP RS

5.3

Varity_R

0.86

gMVP

0.78

Mutation Taster

=53/47

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over