Evidence map›Paper›PMID 11283081›Full record

ArticleJournal of clinical microbiology2001

High degree of interlaboratory reproducibility of human immunodeficiency virus type 1 protease and reverse transcriptase sequencing of plasma samples from heavily treated patients.

R W Shafer, K Hertogs, A R Zolopa, A Warford, S Bloor, B J Betts, T C Merigan, R Harrigan, B A Larder

Abstract read
In one paragraph

Article in Journal of clinical microbiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
–field-weighted citation impact
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

39 citing papers in PubMed.

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  2. Comparison of anJournal of clinical microbiology · 2018
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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

9 authors.

R W ShaferDivision of Infectious Diseases and Center for AIDS Research, Stanford University Medical Center, Stanford, California 94305, USA. rshafer@cmgm.stanford.edu
K Hertogs
A R Zolopa
A Warford
S Bloor
B J Betts
T C Merigan
R Harrigan
B A Larder

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We assessed the reproducibility of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) and protease sequencing using cryopreserved plasma aliquots obtained from 46 heavily treated HIV-1-infected individuals in two laboratories using dideoxynucleotide sequencing. The rates of complete sequence concordance between the two laboratories were 99.1% for the protease sequence and 99.0% for the RT sequence. Approximately 90% of the discordances were partial, defined as one laboratory detecting a mixture and the second laboratory detecting only one of the mixture's components. Only 0.1% of the nucleotides were completely discordant between the two laboratories, and these were significantly more likely to occur in plasma samples with lower plasma HIV-1 RNA levels. Nucleotide mixtures were detected at approximately 1% of the nucleotide positions, and in every case in which one laboratory detected a mixture, the second laboratory either detected the same mixture or detected one of the mixture's components. The high rate of concordance in detecting mixtures and the fact that most discordances between the two laboratories were partial suggest that most discordances were caused by variation in sampling of the HIV-1 quasispecies by PCR rather than by technical errors in the sequencing process itself.

Indexed as

MutationSequence Analysis, DNAAmino Acid SequenceAnti-HIV AgentsBase SequenceDrug Resistance, MicrobialDrug Therapy, CombinationHIV-1HIV InfectionsHIV ProteaseHIV Reverse TranscriptaseHumansLaboratoriesMolecular Sequence DataPolymerase Chain ReactionReproducibility of ResultsAnti-HIV AgentsHIV ProteaseHIV Reverse TranscriptaseReverse Transcriptase InhibitorsRNA, Viral

Identifiers

PMID11283081
PMCPMC87964

What OpenQuestion holds

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Registered trials

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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.