Evidence map›Paper›PMID 28089484›Full record

ArticleRadiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology2017

Dosimetric parameters correlate with duodenal histopathologic damage after stereotactic body radiotherapy for pancreatic cancer: Secondary analysis of a prospective clinical trial.

Vivek Verma, Audrey J Lazenby, Dandan Zheng, Abhijeet R Bhirud, Quan P Ly, Chandrakanth Are, Aaron R Sasson, Chi Lin

Registry-linked trialAbstract readClinical Trial, Phase I
In one paragraph

Article in Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04289792 (Chemotherapy-based Split Stereotactic Body Radiation Therapy for Borderline Resectable and Locally Advanced Pancreatic Cancer), which is not on this map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
2.1field-weighted citation impact, top 11% 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.

NCT04289792 phase2unknown statusnot on this mapstarted 2020, after this paper: background citation

Chemotherapy-based Split Stereotactic Body Radiation Therapy for Borderline Resectable and Locally Advanced Pancreatic Cancer: Study Protocol of a Prospective, Single-arm Phase II Trial

TypeinterventionalSponsorFujian Medical University Union HospitalRan2020 to 2025Enrolled27ConditionsPancreatic NeoplasmsArmsnab-Paclitaxel+Gemcitabine, split-course SBRT
3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 23 citations in OpenAlex.

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  7. Phase I trial of concurrent stereotactic body radiotherapy and nelfinavir for locally advanced borderline or unresectable pancreatic adenocarcinoma.Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology · 2019
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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

8 authors at 2 institutions in 1 country.

Vivek VermaDepartment of Radiation Oncology, University of Nebraska Medical Center, Omaha, USA.
Audrey J LazenbyDepartment of Pathology, University of Nebraska Medical Center, Omaha, USA.
Dandan ZhengDepartment of Radiation Oncology, University of Nebraska Medical Center, Omaha, USA.
Abhijeet R BhirudDepartment of Radiation Oncology, University of Nebraska Medical Center, Omaha, USA.
Quan P LyDepartment of Surgery, University of Nebraska Medical Center, Omaha, USA.
Chandrakanth AreDepartment of Surgery, University of Nebraska Medical Center, Omaha, USA.
Aaron R SassonDepartment of Surgery, Stony Brook University School of Medicine Stony Brook, USA.
Chi LinDepartment of Radiation Oncology, University of Nebraska Medical Center, Omaha, USA. Electronic address: clin@unmc.edu.
University of Nebraska Medical Center · USStony Brook University · US

Funding

Tissue CoreP50CA127297 · NCI · UNIVERSITY OF NEBRASKA MEDICAL CENTER · PI HOLLINGSWORTH, MICHAEL A. · 2008 to 2018
$17.1M
NCI NIH HHS P50 CA127297
6 · The paper itself

Abstract

purposeProspectively assess relationships between dosimetric parameters and histopathologic/clinical duodenal toxicities in patients on a phase I trial for pancreatic cancer.

methodsForty-six borderline resectable/unresectable patients were enrolled on a prospective trial testing neoadjuvant gemcitabine/5-fluorouracil followed by SBRT (5 daily fractions of 5-8Gy) and concurrent nelfinavir. Post-SBRT surgery was performed in 13 resectable patients, which constituted the patient population herein. Pathologic duodenal damage was assessed using predetermined criteria: 1, no/minimal; 2, moderate; and 3, marked damage. Clinical toxicities were assessed per the Clinical Terminology Criteria for Adverse Events (CTCAE). Duodenal dosimetric parameters included V5-V40 and mean/maximum doses. Spearman correlation and linear regression evaluated associations between dosimetric parameters and clinical/pathologic duodenal toxicity.

resultsThe median duodenal mean and maximum doses were 20 and 37Gy. Median duodenal V5-V40 were 64, 62, 52, 39, 27, 14, 5 and 0cc, respectively. The median duodenal damage score was 2 (four 1, eight 2, and one 3). Higher duodenal damage scores correlated with higher duodenal mean doses (r=0.75, p=0.003), V35 (r=0.61, p=0.03), V30 (r=0.67, p=0.01), V25 (r=0.68, p=0.01), V20 (r=0.56, p=0.05), and the planning target volume (PTV) mean (r=0.59, p=0.03) and maximum (r=0.61, p=0.03) doses. Clinical toxicities did not correlate with dosimetric parameters or duodenal pathologic damage.

conclusionsDuodenal histologic damage correlates with mean duodenal dose, V20-V35, and PTV mean/maximum doses.

Indexed as

AgedDeoxycytidineDuodenumFemaleFluorouracilGemcitabineHumansMaleMiddle AgedPancreatic NeoplasmsProspective StudiesRadiosurgeryRadiotherapy DosageDeoxycytidineFluorouracilGemcitabineDuodenumPancreatic cancerStereotactic body radiotherapyToxicity

Identifiers

PMID28089484
PMCPMC5346338
OpenAlexW2572170375

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

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.