rs140821420

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM1BP4

The NM_198428.3(BBS9):​c.736C>T​(p.Leu246Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000306 in 1,613,438 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 Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. L246L) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00018 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00032 ( 1 hom. )

Consequence

BBS9
NM_198428.3 missense

Scores

2
12
4

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:7

Conservation

PhyloP100: 3.14

Publications

1 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM1
In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 8 uncertain in NM_198428.3
BP4
Computational evidence support a benign effect (MetaRNN=0.3733007).

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

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
BBS9
NM_198428.3
MANE Select
c.736C>Tp.Leu246Phe
missense
Exon 8 of 23NP_940820.1Q3SYG4-1
BBS9
NM_001348041.4
c.736C>Tp.Leu246Phe
missense
Exon 8 of 23NP_001334970.1A0A5F9ZH14
BBS9
NM_001348036.1
c.736C>Tp.Leu246Phe
missense
Exon 8 of 23NP_001334965.1Q3SYG4-1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
BBS9
ENST00000242067.11
TSL:1 MANE Select
c.736C>Tp.Leu246Phe
missense
Exon 8 of 23ENSP00000242067.6Q3SYG4-1
BBS9
ENST00000425508.6
TSL:1
c.601C>Tp.Leu201Phe
missense
Exon 7 of 9ENSP00000405151.2Q3SYG4-5
BBS9
ENST00000433714.5
TSL:1
n.736C>T
non_coding_transcript_exon
Exon 8 of 24ENSP00000412159.1F8WCG5

Frequencies

GnomAD3 genomes
AF:
0.000178
AC:
27
AN:
151910
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000967
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.000338
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000131
AC:
33
AN:
251252
AF XY:
0.000155
show subpopulations
Gnomad AFR exome
AF:
0.000123
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:
0.000273
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000319
AC:
466
AN:
1461528
Hom.:
1
Cov.:
31
AF XY:
0.000312
AC XY:
227
AN XY:
727066
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33460
American (AMR)
AF:
0.00
AC:
0
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26120
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39632
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86250
European-Finnish (FIN)
AF:
0.0000562
AC:
3
AN:
53400
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5764
European-Non Finnish (NFE)
AF:
0.000405
AC:
450
AN:
1111804
Other (OTH)
AF:
0.000199
AC:
12
AN:
60378
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.466
Heterozygous variant carriers
0
28
57
85
114
142
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
20
40
60
80
100
<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:
0.000178
AC:
27
AN:
151910
Hom.:
0
Cov.:
32
AF XY:
0.000135
AC XY:
10
AN XY:
74188
show subpopulations
African (AFR)
AF:
0.0000967
AC:
4
AN:
41368
American (AMR)
AF:
0.00
AC:
0
AN:
15236
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5170
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4816
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10588
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.000338
AC:
23
AN:
67948
Other (OTH)
AF:
0.00
AC:
0
AN:
2086
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.492
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000256
Hom.:
1
Bravo
AF:
0.000196
TwinsUK
AF:
0.000539
AC:
2
ALSPAC
AF:
0.000778
AC:
3
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000349
AC:
3
ExAC
AF:
0.000123
AC:
15
EpiCase
AF:
0.000327
EpiControl
AF:
0.000119

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
2
-
Bardet-Biedl syndrome 9 (2)
-
2
-
not provided (2)
-
1
-
Bardet-Biedl syndrome (1)
-
1
-
BBS9-related ciliopathy (1)
-
1
-
BBS9-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.15
BayesDel_addAF
Benign
0.0045
T
BayesDel_noAF
Uncertain
0.070
CADD
Uncertain
24
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.45
T
Eigen
Uncertain
0.51
Eigen_PC
Uncertain
0.51
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Benign
0.83
T
M_CAP
Uncertain
0.087
D
MetaRNN
Benign
0.37
T
MetaSVM
Uncertain
0.41
D
MutationAssessor
Uncertain
2.8
M
PhyloP100
3.1
PrimateAI
Uncertain
0.60
T
PROVEAN
Uncertain
-2.7
D
REVEL
Pathogenic
0.65
Sift
Uncertain
0.013
D
Sift4G
Uncertain
0.036
D
Polyphen
0.92
P
Vest4
0.75
MVP
0.87
MPC
0.16
ClinPred
0.31
T
GERP RS
4.9
Varity_R
0.61
gMVP
0.61
Mutation Taster
=23/77
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.050
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: rs140821420; hg19: chr7-33312657; API