Evidence map›Paper›PMID 33786676›Full record

ArticleAnnals of surgical oncology2021

Adjuvant Chemotherapy Associated with Survival Benefit Following Neoadjuvant Chemotherapy and Pancreatectomy for Pancreatic Ductal Adenocarcinoma: A Population-Based Cohort Study.

Sivesh K Kamarajah, Steven A White, Samer A Naffouje, George I Salti, Fadi Dahdaleh

Open access · hybridAbstract read
In one paragraph

Article in Annals of surgical oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
1.7field-weighted citation impact, top 13% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 21 citations in OpenAlex.

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  5. [Neoadjuvant Therapy for Resectable or Borderline Resectable Pancreatic Cancer].The Korean journal of gastroenterology = Taehan Sohwagi Hakhoe chi · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 4 institutions in 2 countries.

Sivesh K KamarajahDepartment of HPB and Transplant Surgery, The Freeman Hospital, Newcastle upon Tyne, Tyne and Wear, UK.ORCID http://orcid.org/0000-0002-2748-0011
Steven A WhiteDepartment of HPB and Transplant Surgery, The Freeman Hospital, Newcastle upon Tyne, Tyne and Wear, UK.
Samer A NaffoujeDepartment of Surgical Oncology, H. Lee Moffitt Cancer and Research Institute, Tampa, FL, USA.
George I SaltiDepartment of General Surgery, University of Illinois Hospital and Health Sciences System, Chicago, IL, USA.
Fadi DahdalehDepartment of Surgical Oncology, Edward-Elmhurst Health, Naperville, IL, USA. Fadi.Dahdaleh@EEHealth.org.
Edward Hospital · USFreeman Hospital · GBMoffitt Cancer Center · USQueen Elizabeth Hospital Birmingham · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundData supporting the routine use of adjuvant chemotherapy (AC) compared with no AC (noAC) following neoadjuvant chemotherapy (NAC) and resection for pancreatic ductal adenocarcinoma (PDAC) are lacking. This study aimed to determine whether AC improves long-term survival in patients receiving NAC and resection.

methodsPatients receiving resection for PDAC following NAC from 2004 to 2016 were identified from the National Cancer Data Base (NCDB). Patients with a survival rate of < 6 months were excluded to account for immortal time bias. Propensity score matching (PSM) and Cox regression analysis were performed to account for selection bias and analyze the impact of AC on overall survival.

resultsOf 4449 (68%) noAC patients and 2111 (32%) AC patients, 2016 noAC patients and 2016 AC patients remained after PSM. After matching, AC was associated with improved survival (median 29.4 vs. 24.9 months; p < 0.001), which remained after multivariable adjustment (HR 0.81, 95% confidence interval [CI] 0.75-0.88; p < 0.001). On multivariable interaction analyses, this benefit persisted irrespective of nodal status: N0 (hazard ratio [HR] 0.80, 95% CI 0.72-0.90; p < 0.001), N1 (HR 0.76, 95% CI 0.67-0.86; p < 0.001), R0 margin status (HR 0.82, 95% CI 0.75-0.89; p < 0.001), R1 margin status (HR 0.77, 95% CI 0.64-0.93; p = 0.007), no neoadjuvant radiotherapy (NART; HR 0.84, 95% CI 0.74-0.96; p = 0.009), and use of NART (HR 0.80, 95% CI 0.73-0.88; p < 0.001). Stratified analysis by nodal, margin, and NART status demonstrated consistent results.

conclusionAC following NAC and resection is associated with improved survival, even in margin-negative and node-negative disease. These findings suggest completing planned systemic treatment should be considered in all resected PDACs previously treated with NAC.

Indexed as

Carcinoma, Pancreatic DuctalPancreatic NeoplasmsAnticoagulantsChemotherapy, AdjuvantCohort StudiesHumansNeoadjuvant TherapyPancreatectomyRetrospective StudiesAnticoagulants

Identifiers

PMID33786676
PMCPMC8460503
OpenAlexW3145869925

What OpenQuestion holds

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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.