Evidence map›Paper›PMID 34908240›Full record

Trial reportAsia-Pacific journal of clinical oncology2022

Efficacy, toxicity, and quality-of-life outcomes of ultrahypofractionated radiotherapy in patients with localized prostate cancer: A single-arm phase 2 trial from Asia.

Janice S H Tan, Jonathan Y H Teh, Laura L Y Tan, Sheena X F Tan, You Quan Li, Terence W K Tan, Michael L C Wang, Ravindran Kanesvaran, Enya H W Ong, Kae Jack Tay and 4 more

Open access · bronzeAbstract readClinical Trial, Phase II
In one paragraph

Trial report in Asia-Pacific journal of clinical oncology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 22% 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, 1 synthesis or guideline pooled it, 7 citations in OpenAlex.

  1. Guideline
  2. Trial
  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

14 authors at 4 institutions in 2 countries.

Janice S H TanDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.ORCID https://orcid.org/0000-0002-7011-2740
Jonathan Y H TehDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.
Laura L Y TanMinistry of Health Holdings, Singapore.ORCID https://orcid.org/0000-0003-4735-5522
Sheena X F TanDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.
You Quan LiDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.
Terence W K TanDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.
Michael L C WangDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.ORCID https://orcid.org/0000-0001-7882-8957
Ravindran KanesvaranDuke University and National University of Singapore (Duke-NUS) Medical School, Singapore.
Enya H W OngDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.ORCID https://orcid.org/0000-0002-2591-7910
Kae Jack TayDuke University and National University of Singapore (Duke-NUS) Medical School, Singapore.
Lui Shiong LeeDuke University and National University of Singapore (Duke-NUS) Medical School, Singapore.ORCID https://orcid.org/0000-0002-8208-0635
Jeffrey K L TuanDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.ORCID https://orcid.org/0000-0002-4353-8439
Daniel Y H TanDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.
Melvin L K ChuaDivision of Radiation Oncology, National Cancer Centre Singapore, Singapore.ORCID https://orcid.org/0000-0002-1648-1473
National University of Singapore · SGNational Cancer Centre Singapore · SGAsia Centre · THMinistry of Health · SG

Funding

Duke-NUS Medical SchoolMinistry of Education - SingaporeNational Cancer Centre of SingaporeNational Medical Research CouncilNational Research Foundation
6 · The paper itself

Abstract

aimsUltra-hypofractionated radiotherapy (UHF-RT) is widely utilized in men with localized prostate cancer (PCa). There are limited data in Asian cohorts. We report the outcomes of a single-arm, phase II trial of UHF-RT from an Asian center.

methodsWe recruited men with histologically confirmed, nonmetastatic localized PCa. UHF-RT regimens were 36.25 Gy (Cohort A) and 37.5 Gy (Cohort B) delivered in five fractions every other day over 1.5-2.5 weeks. Primary endpoint was physician-scored late genitourinary (GU) and gastrointestinal (GI) adverse events (AEs). Quality-of-life (QoL) was assessed by Expanded Prostate Cancer Index Composite (EPIC) at baseline, 1- and 2-year post-UHF-RT.

resultsBetween March 2014 and August 2019, 105 men were recruited; four were subsequently excluded from analysis. Median age was 68.0 (Interquartile range (IQR): 63.8-73.0) years. 26 (24.8%) and 68 (64.8%) men had NCCN-defined low-and intermediate-risk PCa, respectively. No late ≥G3 GU or GI toxicities were reported in both cohorts. Peak incidence of acute ≥G2 GU AEs at 14 days post-UHF-RT was 23.6% (17/72) and 24.0% (6/25) in Cohorts A and B, respectively; ≥G2 GI AEs were observed in 9.7% (7/72) and 36.0% (9/25), respectively. Late ≥G2 GU and GI AEs occurred in 4.7% and 3.1% of Cohort A patients, and 5.0% in Cohort B at 12 months, with no AEs at 24 months. EPIC scores changed minimally across all domains. At a median follow-up of 44.9 months, we recorded one (1.3%) biochemical relapse by the Phoenix criteria (Cohort A).

conclusionUHF-RT is well tolerated in Asian men and can be a recommended fractionation schema for localized PCa.

Indexed as

Gastrointestinal DiseasesProstatic NeoplasmsRadiotherapy, Intensity-ModulatedAgedDose Fractionation, RadiationHumansMaleMiddle AgedQuality of LifeRadiation Dose HypofractionationAsianintermediate-risklocalized prostate cancerstereotactic body radiotherapyultrahypofractionated radiotherapy

Identifiers

PMID34908240
PMCPMC10946613
OpenAlexW4200179926

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.