Evidence map›Paper›PMID 24956119›Full record

Trial reportPloS one2014

High-throughput sequencing analysis of post-liver transplantation HCV E2 glycoprotein evolution in the presence and absence of neutralizing monoclonal antibody.

Gregory J Babcock, Sowmya Iyer, Heidi L Smith, Yang Wang, Kirk Rowley, Donna M Ambrosino, Phillip D Zamore, Brian G Pierce, Deborah C Molrine, Zhiping Weng

Open access · goldAbstract readClinical Trial, Phase IIComparative StudyMulticenter Study
In one paragraph

Trial report in PloS one, 2014. 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
1.1field-weighted citation impact, top 21% 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, 27 citations in OpenAlex.

  1. Article
  2. Review
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  7. Article
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  13. Article
  14. Limited naturally occurring escape in broadly neutralizing antibody epitopes in hepatitis C glycoprotein E2 and constrained sequence usage in acute infection.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2017
    Article
  15. Engineering Antibodies for the Treatment of Infectious Diseases.Advances in experimental medicine and biology · 2017
    Review
  16. Review
  17. Global mapping of antibody recognition of the hepatitis C virus E2 glycoprotein: Implications for vaccine design.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  18. Review
  19. Review
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

10 authors at 1 institution in 1 country.

Gregory J BabcockMassBiologics, University of Massachusetts Medical School, Boston, Massachusetts, United States of America.
Sowmya IyerProgram in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America; Bioinformatics Program, Boston University, Boston, Massachusetts, United States of America.
Heidi L SmithMassBiologics, University of Massachusetts Medical School, Boston, Massachusetts, United States of America.
Yang WangMassBiologics, University of Massachusetts Medical School, Boston, Massachusetts, United States of America.
Kirk RowleyMassBiologics, University of Massachusetts Medical School, Boston, Massachusetts, United States of America.
Donna M AmbrosinoMassBiologics, University of Massachusetts Medical School, Boston, Massachusetts, United States of America.
Phillip D ZamoreDepartment of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America.
Brian G PierceProgram in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America.
Deborah C MolrineMassBiologics, University of Massachusetts Medical School, Boston, Massachusetts, United States of America.
Zhiping WengProgram in Bioinformatics and Integrative Biology, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America.
University of Massachusetts Chan Medical School · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Chronic hepatitis C virus (HCV) infection is the most common cause of end-stage liver disease, often leading to liver transplantation, in which case circulating virions typically infect the transplanted liver within hours and viral concentrations can quickly exceed pre-transplant levels. MBL-HCV1 is a fully human monoclonal antibody recognizing a linear epitope of the HCV E2 envelope glycoprotein (amino acids 412-423). The ability of MBL-HCV1 to prevent HCV recurrence after liver transplantation was investigated in a phase 2 randomized clinical trial evaluating six MBL-HCV1-treated subjects and five placebo-treated subjects. MBL-HCV1 treatment significantly delayed time to viral rebound compared with placebo treatment. Here we report results from high-throughput sequencing on the serum of each of the eleven enrolled subjects prior to liver transplantation and after viral rebound. We further sequenced the sera of the MBL-HCV1-treated subjects at various interim time points to study the evolution of antibody-resistant viral variants. We detected mutations at one of two positions within the antibody epitope--mutations of N at position 415 to D, K or S, or mutation of N at position 417 to S. It has been previously reported that N415 is not glycosylated in the wild-type E2 protein, but N417S can lead to glycosylation at position 415. Thus N415 is a key position for antibody recognition and the only routes we identified for viral escape, within the constraints of HCV fitness in vivo, involve mutating or glycosylating this position. Evaluation of mutations along the entire E1 and E2 proteins revealed additional positions that changed moderately before and after MBL-HCV1 treatment for subsets of the six subjects, yet underscored the relative importance of position 415 in MBL-HCV1 resistance.

Indexed as

Biological EvolutionLiver TransplantationAmino Acid SequenceAntibodies, MonoclonalAntibodies, NeutralizingAntibodies, ViralBiomarkersDouble-Blind MethodFollow-Up StudiesGlycosylationHepatitis C, ChronicHigh-Throughput Nucleotide SequencingHumansMolecular Sequence DataPrognosisRecurrenceAntibodies, MonoclonalAntibodies, NeutralizingAntibodies, ViralBiomarkersglycoprotein E2, Hepatitis C virusRNA, ViralViral Envelope Proteins

Identifiers

PMID24956119
PMCPMC4067308
OpenAlexW2022199351

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.