Evidence map›Paper›PMID 34533624›Full record

ArticleJournal of cancer research and clinical oncology2022

Trophoblast cell-surface antigen 2 expression in lung cancer patients and the effects of anti-cancer treatments.

Shota Omori, Koji Muramatsu, Takuya Kawata, Eriko Miyawaki, Taichi Miyawaki, Nobuaki Mamesaya, Takahisa Kawamura, Haruki Kobayashi, Kazuhisa Nakashima, Kazushige Wakuda and 6 more

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In one paragraph

Article in Journal of cancer research and clinical oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 33% 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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

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  10. Quantitative Protein Expression of Antibody-Drug Conjugate Targets in EGFR Mutated and Wild-type Non-Small Cell Lung Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025
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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

16 authors at 3 institutions in 1 country.

Shota OmoriDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan. s.omori@scchr.jp.ORCID http://orcid.org/0000-0003-1407-9779
Koji MuramatsuDivision of Pathology, Shizuoka Cancer Center, Shizuoka, Japan.
Takuya KawataDivision of Pathology, Shizuoka Cancer Center, Shizuoka, Japan.
Eriko MiyawakiDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Taichi MiyawakiDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Nobuaki MamesayaDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Takahisa KawamuraDepartment of Thoracic Oncology, Osaka International Cancer Institute, Osaka, Japan.
Haruki KobayashiDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Kazuhisa NakashimaDivision of Medical Oncology and Respiratory Medicine, Department of Internal Medicine, Faculty of Medicine, Shimane University, Shimane, Japan.
Kazushige WakudaDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Akira OnoDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Hirotsugu KenmotsuDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Tateaki NaitoDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Haruyasu MurakamiDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Takashi SuginoDivision of Pathology, Shizuoka Cancer Center, Shizuoka, Japan.
Toshiaki TakahashiDivision of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka, Japan.
Shizuoka Cancer Center · JPOsaka International Cancer Institute · JPShimane University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTrophoblast cell-surface antigen 2 (TROP2) is expressed on the surface of trophoblast cells and many malignant tumor cells. However, data on TROP2 expression in advanced lung cancer are insufficient, and its changes have not been fully evaluated.

methodsWe assessed the prevalence and changes in TROP2 expression in patients with lung cancer who received anti-cancer treatments using immunohistochemical (IHC) analysis with an anti-TROP2 antibody (clone: SP295). IHC scores were graded from 0 to 3; grade ≥ 2 was considered positive for TROP2 expression. We defined a difference in IHC score, before and after anti-cancer treatments, as the change in TROP2 expression.

resultsBefore anti-cancer treatment, TROP2 expression was observed in 89% (143/160) of the patients and was significantly more common in adenocarcinoma and squamous cell carcinoma than in neuroendocrine carcinoma (P < 0.001). After anti-cancer treatment, TROP2 expression was observed in 87% (139/160) of the patients. The distribution of TROP2 expression in post-treatment samples was analogous to that in pre-treatment samples when compared using the Wilcoxon signed-rank test (P = 0.509). However, an increase in TROP2 expression was seen in 19 (12%), and a decrease in 20 (13%) patients. Patients treated with targeted therapy showed significantly higher changes in TROP2 expression (P = 0.019) and thoracic radiotherapy was more likely to increase TROP2 expression than chemotherapy alone.

conclusionAlthough some anti-cancer treatments might alter the TROP2 expression, TROP2 was expressed in most lung cancer specimens before and after anti-cancer treatments. These results support the development of TROP2-directed therapy against advanced lung cancer in various treatment lines.

Indexed as

AdenocarcinomaLung NeoplasmsAntigens, NeoplasmCell Adhesion MoleculesHumansTrophoblastsAntigens, NeoplasmCell Adhesion MoleculesChemotherapyImmunohistochemical analysisTargeted therapyThoracic radiotherapyTrophoblast cell-surface antigen 2

Identifiers

PMID34533624
PMCPMC11801068
OpenAlexW3136371193

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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.