Evidence map›Paper›PMID 8636407›Full record

ArticleThe Journal of clinical investigation1996

A defective Vkappa A2 allele in Navajos which may play a role in increased susceptibility to haemophilus influenzae type b disease.

A J Feeney, M J Atkinson, M J Cowan, G Escuro, G Lugo

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of clinical investigation, 1996. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed
3.2field-weighted citation impact, top 9% 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

48 citing papers in PubMed, 107 citations in OpenAlex.

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  20. Observational
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

5 authors at 2 institutions in 1 country.

A J FeeneyThe Scripps Research Institute, Department of Immunology, La Jolla, California 92037, USA.
M J Atkinson
M J Cowan
G Escuro
G Lugo
Scripps Research Institute · USUniversity of California, San Francisco · US

Funding

VPA 985 IN LIVER CIRRHOSIS &ASCITESM01RR000833 · NCRR · SCRIPPS RESEARCH INSTITUTE · PI BABIOR, BERNARD M · 1985 to 2004
$14.0M
GENE LINKAGE STUDY OF IMMUNODEFICIENCY IN NAVAJO INDIANSR01AI028339 · NIAID · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI COWAN, MORTON · 1993 to 2001
$739k
NCRR NIH HHS M01 RR00833NIAID NIH HHS AI28339
6 · The paper itself

Abstract

The antibody response to H. influenzae type b (Hib) is pauciclonal, and is dominated by antibodies using the VkappaA2 gene. Navajos have a 5-10-fold increased incidence of Hib disease compared with control populations. We hypothesized that a polymorphism in one of the genes in this oligoclonal response may lead to increased disease susceptibility. Since the predominant A2+ anti-Hib antibodies have high avidity for Hib and can be unmutated, the A2 Vkappa gene was analyzed. Over half of the Navajos studied, but only one control individual, had a new allele of A2, termed A2b, with three changes from the published A2 germline sequence. One of the changes was in the recombination signal sequence, suggesting that the A2b allele might not undergo V-J rearrangement very frequently. This possibility was confirmed by analyzing the relative frequency of non-productive A2 rearrangements in A2a/b heterozygous Navajos. Many fewer A2b rearrangements were observed, showing that the A2b allele is defective in its ability to undergo rearrangement. The prevalence of this allele in Navajos may play a role in their increased susceptibility to invasive Hib disease. If so, it would underscore the importance of the germline Ig repertoire for protective antibody responses to pathogenic bacteria in unimmunized children.

Indexed as

Genes, ImmunoglobulinAllelesAmino Acid SequenceAntibodies, BacterialBase SequenceGene RearrangementHaemophilus InfectionsHaemophilus influenzaeHumansImmunoglobulin kappa-ChainsImmunoglobulin Variable RegionInuitMolecular Sequence DataPromoter Regions, GeneticAntibodies, BacterialImmunoglobulin kappa-ChainsImmunoglobulin Variable Region

Identifiers

PMID8636407
PMCPMC507307
OpenAlexW2047012085

What OpenQuestion holds

Textmetadata
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.