Evidence map›Paper›PMID 36592478›Full record

ArticleJournal of radiation research2023

Effects of lymphopenia on survival in proton therapy with chemotherapy for non-small cell lung cancer.

Masatoshi Nakamura, Hitoshi Ishikawa, Kayoko Ohnishi, Yutarou Mori, Keiichiro Baba, Kensuke Nakazawa, Toshihiro Shiozawa, Ikuo Sekine, Kazushi Maruo, Toshiyuki Okumura and 1 more

Open access · goldAbstract read
In one paragraph

Article in Journal of radiation research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.6field-weighted citation impact, top 15% 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

3 citing papers in PubMed, 7 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
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

11 authors at 3 institutions in 1 country.

Masatoshi NakamuraDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Hitoshi IshikawaDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Kayoko OhnishiDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Yutarou MoriDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Keiichiro BabaDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Kensuke NakazawaDepartment of Respiratory Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Toshihiro ShiozawaDepartment of Respiratory Medicine, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Ikuo SekineDepartment of Medical Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Kazushi MaruoDepartment of Biostatistics, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Toshiyuki OkumuraDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
Hideyuki SakuraiDepartment of Radiation Oncology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan.
University of Tsukuba · JPJapanese Red Cross Narita Hospital · JPNational Institutes for Quantum and Radiological Science and Technology · JP

Funding

Ministry of Education, Culture, Sports, Science and Technology 19H03596
6 · The paper itself

Abstract

Lymphocytes play an important role in the cancer immune system. In the present study, we aimed to evaluate the associations of lymphopenia during proton beam therapy (PBT) and concurrent chemotherapy with clinical outcomes and to determine whether lung or bone is more influential on lymphopenia during PBT. Data from 41 patients with stage III non-small cell lung cancer (NSCLC) who received PBT of 74 GyE with concurrent chemotherapy between 2007 and 2017 were reviewed retrospectively. The correlation between dosimetry parameters obtained from dose-volume histograms of the bone and lung and lymphopenia during PBT were analyzed. Minimum absolute lymphocyte count (ALCmin) and maximum neutrophil/lymphocyte ratio (NLRmax) were used as indicators of lymphopenia. Bone V5-20 and lung V5-50 were significantly correlated with the ALCmin and NLRmax during PBT. Multivariable analysis showed that the NLRmax, but not the ALCmin, was associated with overall survival (OS), progression-free survival (PFS) and distant metastasis-free survival (DMFS). The 3-year rates of OS, PFS and DMFS of patients with a low (≤ 6.3) versus high (> 6.3) NLRmax were 73.9% vs 44.4% (P = 0.042), 26.1% vs 5.6% (P = 0.022) and 39.1% vs 5.6% (P < 0.001), respectively. Lung V20 was significantly associated with DMFS on multivariable analyses (hazard ratio: 1.094, P = 0.008), whereas bone V5 had no impact on survival outcomes. We concluded that the NLRmax was a better prognostic indicator than the ALCmin, and the lung dose had more influence than the bone dose on the main survival outcomes in stage III NSCLC patients treated with PBT combined with concurrent chemotherapy.

Indexed as

Carcinoma, Non-Small-Cell LungLung NeoplasmsLymphopeniaProton TherapyHumansRetrospective Studiesdose–volume histogram (DVH)proton beam therapy (PBT)radiation-induced lymphopeniastage III non-small cell lung cancer (NSCLC)survival

Identifiers

PMID36592478
PMCPMC10036091
OpenAlexW4313454504

What OpenQuestion holds

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LicenceCC BY-NC
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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.