NM_031885.5(BBS2):c.1190C>G (p.Thr397Ser) AND Bardet-Biedl syndrome

Clinical significance:Uncertain significance (Last evaluated: Sep 26, 2020)

Review status:1 star out of maximum of 4 stars

criteria provided, single submitter

Based on:
1 submission [Details]
Record status:

Allele description [Variation Report for NM_031885.5(BBS2):c.1190C>G (p.Thr397Ser)]

NM_031885.5(BBS2):c.1190C>G (p.Thr397Ser)

BBS2:Bardet-Biedl syndrome 2 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
Genomic location:
Preferred name:
NM_031885.5(BBS2):c.1190C>G (p.Thr397Ser)
  • NC_000016.10:g.56501388G>C
  • NG_009312.1:g.23896C>G
  • NG_009312.2:g.23637C>G
  • NM_001377456.1:c.1190C>G
  • NM_031885.5:c.1190C>GMANE SELECT
  • NP_001364385.1:p.Thr397Ser
  • NP_114091.4:p.Thr397Ser
  • NC_000016.9:g.56535300G>C
  • NC_000016.9:g.56535300G>C
  • NR_165293.1:n.1352C>G
  • NR_165294.1:n.1352C>G
  • NR_165295.1:n.1352C>G
  • NR_165296.1:n.1352C>G
  • NR_165297.1:n.1352C>G
Protein change:
dbSNP: rs368138622
NCBI 1000 Genomes Browser:
Molecular consequence:
  • NM_001377456.1:c.1190C>G - missense variant - [Sequence Ontology: SO:0001583]
  • NM_031885.5:c.1190C>G - missense variant - [Sequence Ontology: SO:0001583]
  • NR_165293.1:n.1352C>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_165294.1:n.1352C>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_165295.1:n.1352C>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_165296.1:n.1352C>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]
  • NR_165297.1:n.1352C>G - non-coding transcript variant - [Sequence Ontology: SO:0001619]


Bardet-Biedl syndrome (BBS)
MONDO: MONDO:0015229; MedGen: C0752166; Orphanet: 110; OMIM: PS209900

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
SCV001518030Invitaecriteria provided, single submitter
Uncertain significance
(Sep 26, 2020)
germlineclinical testing

PubMed (1)
[See all records that cite this PMID]

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing



Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240-242.

PubMed [citation]

Details of each submission

From Invitae, SCV001518030.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (1)


This sequence change replaces threonine with serine at codon 397 of the BBS2 protein (p.Thr397Ser). The threonine residue is weakly conserved and there is a small physicochemical difference between threonine and serine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals with BBS2-related conditions. ClinVar contains an entry for this variant (Variation ID: 193748). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Oct 25, 2021

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