Evidence map›Paper›PMID 31034570›Full record

ArticleJournal of radiation research2019

Hyaluronate gel injection for rectum dose reduction in gynecologic high-dose-rate brachytherapy: initial Japanese experience.

Tairo Kashihara, Naoya Murakami, Nikolaos Tselis, Kazuma Kobayashi, Keisuke Tsuchida, Satoshi Shima, Koji Masui, Ken Yoshida, Kana Takahashi, Koji Inaba and 6 more

3 registry-linked trialsOpen access · goldAbstract read
In one paragraph

Article in Journal of radiation research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
7.5field-weighted citation impact, top 2% 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.

NCT05369221 phase1completednot on this mapstarted 2022, after this paper: background citation

Feasibility of ReSpace™ Hydrogel to Establish a Stable Cervical-rectal Space

TypeinterventionalSponsorPeking Union Medical College HospitalRan2022 to 2023Enrolled8ConditionsUterine Cervical NeoplasmsArmsReSpace™
NCT05690906 phase2unknown statusnot on this mapstarted 2022, after this paper: background citation

A Prospective, Multicenter, Randomized, Parallel-controlled, Superiority Clinical Study to Evaluate the Effect of ReSpace™ Hydrogel on Reducing Rectal Radiation Dose in Radiotherapy for Cervical Cancer

TypeinterventionalSponsorPeking Union Medical College HospitalRan2022 to 2023Enrolled100ConditionsUterine Cervical NeoplasmsArmsReSpace™, gauze packing
NCT05902390 naunknown statusnot on this mapstarted 2023, after this paper: background citation

A Prospective, Multicenter, Exploratory Clinical Study to Evaluate the Long-term Benefit of Hydrogel Spacer in Reducing Rectal Radiation Dose in Cervical Cancer Radiation Therapy.

TypeinterventionalSponsorPeking Union Medical College HospitalRan2023 to 2024Enrolled106ConditionsUterine Cervical NeoplasmsArmshydrogel spacer
3 · Its place in the literature

Who cites it

31 citing papers in PubMed, 48 citations in OpenAlex.

  1. Article
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  5. Role of rectal spacers in gynecological cancer radiotherapy: reducing rectal dose and treatment-related toxicity.Reports of practical oncology and radiotherapy : journal of Greatpoland Cancer Center in Poznan and Polish Society of Radiation Oncology · 2025
    Review
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  11. Hyaluronic acid to manage radiotoxicities in gynecological cancer patients: a scoping review.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2024
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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 5 institutions in 2 countries.

Tairo KashiharaDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Naoya MurakamiDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Nikolaos TselisDepartment of Radiotherapy and Oncology, University of Frankfurt, Theodor-W.-Adorno-Platz 1 , Frankfurt am Main, Germany.
Kazuma KobayashiDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Keisuke TsuchidaDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Satoshi ShimaDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Koji MasuiDepartment of Radiology, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan.
Ken YoshidaDepartment of Radiation Oncology, Osaka Medical College, Daigakucho 2-7, Takatsuki, Osaka, Japan.
Kana TakahashiDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Koji InabaDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Rei UmezawaDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Hiroshi IgakiDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Yoshinori ItoDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Tomoyasu KatoDepartment of Gynecologic Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
Takashi UnoDepartment of Radiology, Chiba University Hospital, 1-8-1 Inohana, Chuo-ku, Chiba-shi, Chiba, Japan.
Jun ItamiDepartment of Radiation Oncology, National Cancer Center Hospital, Tsukiji 5-1-1, Chuo-ku, Tokyo, Japan.
National Cancer Center Hospital East · JPChiba University Hospital · JPGoethe University Frankfurt · DEKyoto Prefectural University of Medicine · JPOsaka Medical and Pharmaceutical University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Perirectal hyaluronate gel injection (HGI) appears to be a promising technique for healthy tissue dose sparing in pelvic radiotherapy. In this analysis, we report our initial experience of HGI in gynecologic brachytherapy, focusing on its safety and effectiveness for dose reduction to the rectum. Between July 2013 and May 2014, 36 patients received HGI for primary/salvage gynecologic brachytherapy. Dosimetric effect analysis was based on pre- and post-HGI computed tomography dataset registration with corresponding dose-volume histogram evaluation. The maximum dose to the most exposed 0.1 cm3 (D0.1cm3) and 2.0 cm3 (D2.0cm3) were used as index values for rectum and bladder dose evaluation. The dose indexes for target volume (TV) coverage were TV D90/V100. In all cases, HGI was well tolerated, with no acute or late adverse events documented at a median follow-up of 220 days (range, 18-1046 days). Rectum D2.0cm3 and D0.1cm3 were significantly decreased by HGI (P < 0.001 and P = 0.003, respectively), with no significant impact on dosimetric parameters of bladder and TV coverage. Factors correlating negatively with the dosimetric effect of HGI were an increasing number of interstitial catheters (P = 0.003) as well as Lcranial100% (P = 0.014) and Lcranial80% (P = 0.001) [i.e. the length from the anal verge to the most cranial point at which the 100% and 80% isodose lines, respectively, crossed the rectum]. The concept of HGI for gynecologic brachytherapy is plausible, and our initial experience indicates it to be an effective technique for rectal dose reduction in radiotherapy of intrapelvic tumours.

Indexed as

BrachytherapyGelsRadiometrySalvage TherapyAdultAgedAged, 80 and overFemaleGenital Neoplasms, FemaleHumansHyaluronic AcidJapanMiddle AgedPelvisRadiation DosageRadiotherapyGelsHyaluronic Acidbrachytherapygynecologic malignancieshigh-dose ratehyaluronate gel

Identifiers

PMID31034570
PMCPMC6640896
OpenAlexW2943654241

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.