Evidence map›Paper›PMID 16162266›Full record

ArticleImmunology2005

Problems in using statistical analysis of replacement and silent mutations in antibody genes for determining antigen-driven affinity selection.

Biplab Bose, Subrata Sinha

Open access · greenAbstract read
In one paragraph

Article in Immunology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 42 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Review
  5. Article
  6. The mutation patterns in B-cell immunoglobulin receptors reflect the influence of selection acting at multiple time-scales.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Article
  7. Quantifying evolutionary constraints on B-cell affinity maturation.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2015
    Article
  8. Article
  9. Article
  10. Article
  11. Constant domain-regulated antibody catalysis.The Journal of biological chemistry · 2012
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Getting started in computational immunology.PLoS computational biology · 2008
    Review
  18. Article
  19. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

Biplab BoseDepartment of Biochemistry, All India Institute of Medical Sciences, New Delhi, India.
Subrata Sinha
All India Institute of Medical Sciences · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The analysis of molecular signatures of antigen-driven affinity selection of B cells is of immense use in studies on normal and abnormal B cell development. Most of the published literature compares the expected and observed frequencies of replacement (R) and silent (S) mutations in the complementarity-determining regions (CDRs) and the framework regions (FRs) of antibody genes to identify the signature of antigenic selection. The basic assumption of this statistical method is that antigenic selection creates a bias for R mutations in the CDRs and for S mutations in the FRs. However, it has been argued that the differences in intrinsic mutability among different regions of an antibody gene can generate a statistically significant bias even in the absence of any antigenic selection. We have modified the existing statistical method to include the effects of intrinsic mutability of different regions of an antibody gene. We used this method to analyse sequences of several B cell-derived monoclonals against T-dependent antigens, T-independent antigens, clones derived from lymphoma and amyloidogenic clones. Our sequence analysis indicates that even after correcting for the intrinsic mutability of antibody genes, statistical parameters fail to reflect the role of antigen-driven affinity selection in maturation of many clones. We suggest that, contrary to the basic assumption of such statistical methods, selection can act both for and against R mutations in the CDR as well as in the FR regions. In addition we have identified different methodological difficulties in the current uses of such statistical analysis of antibody genes.

Indexed as

Models, GeneticModels, ImmunologicalMutationAnimalsAntibodiesAntigens, T-IndependentB-LymphocytesComplementarity Determining RegionsGenes, ImmunoglobulinHumansImmunoglobulin Variable RegionMiceAntibodiesAntigens, T-IndependentComplementarity Determining RegionsImmunoglobulin Variable Region

Identifiers

PMID16162266
PMCPMC1817819
OpenAlexW2020905367

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.