Evidence map›Paper›PMID 33512651›Full record

ArticleLa Radiologia medica2021

CT texture analysis for prediction of EGFR mutational status and ALK rearrangement in patients with non-small cell lung cancer.

Giorgio Maria Agazzi, Marco Ravanelli, Elisa Roca, Daniela Medicina, Piera Balzarini, Carlotta Pessina, William Vermi, Alfredo Berruti, Roberto Maroldi, Davide Farina

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Article in La Radiologia medica, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 2 pooled it
–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

50 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  10. PredictingTranslational lung cancer research · 2024
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  16. Peritoneal Carcinosis: What the Radiologist Needs to Know.Diagnostics (Basel, Switzerland) · 2023
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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

10 authors.

Giorgio Maria AgazziDepartment of Radiology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Marco RavanelliDepartment of Radiology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Elisa RocaDepartment of Oncology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Daniela MedicinaDepartment of Molecular and Translational Medicine, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Piera BalzariniDepartment of Molecular and Translational Medicine, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Carlotta PessinaDepartment of Radiology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy. c.pessina@unibs.it.ORCID http://orcid.org/0000-0003-0016-7428
William VermiDepartment of Molecular and Translational Medicine, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Alfredo BerrutiDepartment of Oncology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Roberto MaroldiDepartment of Radiology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.
Davide FarinaDepartment of Radiology, University of Brescia, Piazzale Spedali Civili 1, 25123, Brescia, Italy.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo develop a CT texture-based model able to predict epidermal growth factor receptor (EGFR)-mutated, anaplastic lymphoma kinase (ALK)-rearranged lung adenocarcinomas and distinguish them from wild-type tumors on pre-treatment CT scans. MATERIALS AND

methodsTexture analysis was performed using proprietary software TexRAD (TexRAD Ltd, Cambridge, UK) on pre-treatment contrast-enhanced CT scans of 84 patients with metastatic primary lung adenocarcinoma. Textural features were quantified using the filtration-histogram approach with different spatial scale filters on a single 5-mm-thick central slice considered representative of the whole tumor. In order to deal with class imbalance regarding mutational status percentages in our population, the dataset was optimized using the synthetic minority over-sampling technique (SMOTE) and correlations with textural features were investigated using a generalized boosted regression model (GBM) with a nested cross-validation approach (performance averaged over 1000 resampling episodes).

resultsALK rearrangements, EGFR mutations and wild-type tumors were observed in 19, 28 and 37 patients, respectively, in the original dataset. The balanced dataset was composed of 171 observations. Among the 29 original texture variables, 17 were employed for model building. Skewness on unfiltered images and on fine texture was the most important features. EGFR-mutated tumors showed the highest skewness while ALK-rearranged tumors had the lowest values with wild-type tumors showing intermediate values. The average accuracy of the model calculated on the independent nested validation set was 81.76% (95% CI 81.45-82.06).

conclusionTexture analysis, in particular skewness values, could be promising for noninvasive characterization of lung adenocarcinoma with respect to EGFR and ALK mutations.

Indexed as

MutationAdultAgedAged, 80 and overAnaplastic Lymphoma KinaseCarcinoma, Non-Small-Cell LungDNA Mutational AnalysisDNA, NeoplasmErbB ReceptorsFemaleHumansLung NeoplasmsMaleMiddle AgedPredictive Value of TestsRetrospective StudiesALK protein, humanAnaplastic Lymphoma KinaseDNA, NeoplasmEGFR protein, humanErbB ReceptorsAnaplastic lymphoma kinaseComputed tomographyEpidermal growth factorNon-small cell lung cancerRadiomicsTexture analysis

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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.