Evidence map›Paper›PMID 35312784›Full record

ArticleNeuro-oncology2022

Effectiveness and safety of pneumocystis pneumonia prophylaxis for patients receiving temozolomide chemoradiotherapy.

Seth A Climans, Eva Grunfeld, Warren P Mason, Kelvin K W Chan

Open access · bronzeAbstract read
In one paragraph

Article in Neuro-oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
2.2field-weighted citation impact, top 12% 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

8 citing papers in PubMed, 16 citations in OpenAlex.

  1. Review
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  5. Trends in the Epidemiology ofJournal of fungi (Basel, Switzerland) · 2023
    Review
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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

4 authors at 2 institutions in 1 country.

Seth A ClimansInstitute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.ORCID 0000-0002-4961-237X
Eva GrunfeldInstitute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.
Warren P MasonDepartment of Medicine, Division of Neurology, University of Toronto, Toronto, Ontario, Canada.
Kelvin K W ChanInstitute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.
University of Toronto · CAWestern University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMalignant gliomas are treated with temozolomide chemoradiotherapy. Because pneumocystis pneumonia (PCP) can occur in patients receiving temozolomide, the product monograph recommends PCP prophylaxis during temozolomide chemoradiotherapy. Not all neuro-oncologists follow these recommendations, though.

methodsWe performed a population-based retrospective cohort study of glioma patients undergoing temozolomide chemoradiotherapy 2005 to 2019 in Ontario, Canada. A propensity score model was used to predict the use of PCP prophylaxis. We compared the risk of PCP within 90 days of starting radiotherapy with versus without PCP prophylaxis using inverse probability of treatment weighting (IPTW). We also examined overall survival, hospitalizations, and myelosuppression.

resultsThere were 3,225 patients included in the cohort (648 received antibiotics and 2,434 did not). Only 18 patients developed PCP within 90 days of therapy. The IPTW-adjusted absolute risk reduction in PCP with antibiotics was 0.0035 (95% CI, -0.0013 to 0.0083), number needed to treat: 288. Neither overall survival nor hospitalization count differed between the groups. The number needed to harm by causing grade 3/4 neutropenia was 39.

conclusionsIn regions (like Ontario) where PCP is rare, routine PCP prophylaxis with trimethoprim-sulfamethoxazole should not be offered, since the harms may outweigh the benefits.

Indexed as

Pneumonia, PneumocystisAnti-Bacterial AgentsChemoradiotherapyHumansRetrospective StudiesTemozolomideTrimethoprim, Sulfamethoxazole Drug CombinationAnti-Bacterial AgentsTemozolomideTrimethoprim, Sulfamethoxazole Drug Combinationgliomapneumocystis pneumoniatemozolomide

Identifiers

PMID35312784
PMCPMC9527509
OpenAlexW4220732082

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.