Evidence map›Paper›PMID 32054485›Full record

ArticleRadiation oncology (London, England)2020

Validation of the graded prognostic assessment for gastrointestinal cancers with brain metastases (GI-GPA).

Carsten Nieder, Mandy Hintz, Ilinca Popp, Angelika Bilger, Anca L Grosu

Abstract readValidation Study
In one paragraph

Article in Radiation oncology (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

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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

5 authors.

Carsten NiederDepartment of Oncology and Palliative Medicine, Nordland Hospital, 8092, Bodø, Norway. carsten.nieder@nlsh.no.ORCID http://orcid.org/0000-0003-1592-2908
Mandy HintzDepartment of Radiation Oncology, University Hospital Freiburg, 79106, Freiburg, Germany.
Ilinca PoppDepartment of Radiation Oncology, University Hospital Freiburg, 79106, Freiburg, Germany.
Angelika BilgerDepartment of Radiation Oncology, University Hospital Freiburg, 79106, Freiburg, Germany.
Anca L GrosuDepartment of Radiation Oncology, University Hospital Freiburg, 79106, Freiburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this study was to validate a new prognostic model (GI-GPA) originally derived from a multi-center database (USA, Canada, Japan). PATIENTS AND

methodsThis retrospective study included 92 German and Norwegian patients treated with individualized approaches, always including brain radiotherapy. Information about age, extracranial spread, number of brain metastases, performance status and other variables was collected. The GI-GPA score was calculated as described by Sperduto et al.

resultsMedian survival was 4 months. The corresponding figures for the 4 different prognostic strata were 2.3, 4.4, 9.4 and 12.7 months, respectively (p = 0.0001). Patients whose management included surgical resection had longer median survival than those who were treated with other approaches (median 11.9 versus 3.0 months, p = 0.002). Comparable results were seen for additional systemic therapy (median 8.5 versus 3.5 months, p = 0.01).

conclusionThese results confirm the validity of the GI-GPA in an independent dataset from a different geographical region, despite the fact that overall survival was shorter in all prognostic strata, compared to Sperduto et al. Potential explanations include differences in molecular tumor characteristics and treatment selection, both brain metastases-directed and extracranially. Long-term survival beyond 5 years is possible in a small minority of patients.

Indexed as

AdultAgedAged, 80 and overBrain NeoplasmsFemaleGastrointestinal NeoplasmsHumansMaleMiddle AgedPrognosisRadiotherapy DosageRadiotherapy, Intensity-ModulatedRadiotherapy Planning, Computer-AssistedRetrospective StudiesSurvival RateBrain metastasesGastrointestinal cancerPrognostic factorsRadiotherapy

Identifiers

PMID32054485
PMCPMC7020357

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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.