Evidence map›Paper›PMID 33548921›Full record

ArticleNeurosurgery2021

Long-Term Outcomes of Intra-Arterial Chemotherapy for Progressive or Unresectable Pilocytic Astrocytomas: Case Studies.

Kutluay Uluc, Dominic A Siler, Ricardo Lopez, Csanad Varallyay, Joao Prola Netto, Jenny Firkins, Cindy Lacy, Amy Huddleston, Prakash Ambady, Edward A Neuwelt

Abstract readCase Reports
In one paragraph

Article in Neurosurgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
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

7 citing papers in PubMed.

  1. Challenges in diagnosing pediatric pilocytic Astrocytoma around the foramen of monro: the potential imaging pitfalls.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

10 authors.

Kutluay UlucDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.
Dominic A SilerDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.
Ricardo LopezPonce Health Sciences University, Ponce, Puerto Rico.
Csanad VarallyayDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.
Joao Prola NettoDepartment of Radiology, Providence St Joseph, Portland, Oregon.
Jenny FirkinsSchool of Nursing, Oregon Health & Science University, Portland, Oregon.
Cindy LacyDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.
Amy HuddlestonDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.
Prakash AmbadyDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.
Edward A NeuweltDepartment of Neurology, Oregon Health & Science University, Portland, Oregon.

Funding

Opening of the Blood-Brain Barrier to Antitumor AgentsR01CA199111 · NCI · OREGON HEALTH & SCIENCE UNIVERSITY · PI NEUWELT, EDWARD A. · 2016 to 2020
$3.1M
NCI NIH HHS R01 CA199111
6 · The paper itself

Abstract

backgroundProgressive and/or unresectable pilocytic astrocytomas (PAs) carry a poor prognosis compared to typical PA. Early radiotherapy (RT) may have severe long-term neurocognitive side effects in this patient population. Intra-arterial (IA) chemotherapy is a viable alternative or addition to intravenous (IV) chemotherapy, which may be beneficial in avoidance of early RT.

objectiveTo evaluate the safety and efficacy of IA chemotherapy in this subset of patients.

methodsThis is a retrospective review of medical records of PA patients who are treated with IA chemotherapy at Oregon Health & Science University from 1997 until 2019. Response to treatment was categorized as complete response (CR), partial response (PR), stable disease (SD), or progressive disease (PD). Progression free survival (PFS) and overall survival (OS) are also reported.

resultsTwelve patients were identified. All patients experienced progression prior to initiation of IA chemotherapy. The most common grade 3 or 4 toxicities related to chemotherapy were thrombocytopenia (66%), neutropenia (66%), leukopenia (50%), anemia (33%), and lymphopenia (16%). Responses achieved were CR in 1, PR in 3, SD in 7, and PD in 1. Median PFS and median OS were 16.5 and 83.5 mo, respectively. A total of 112 procedures (IA injections) were performed and 250 arteries were catheterized. There were 3 minor and no major complications attributable to procedures.

conclusionThis study demonstrates that IA chemotherapy can be safely used in patients with unresectable or progressive PA.

Indexed as

Disease ProgressionAdolescentAdultAntineoplastic Combined Chemotherapy ProtocolsAstrocytomaBrain NeoplasmsChildFemaleHumansInfantInfusions, Intra-ArterialMaleMiddle AgedRetrospective StudiesSpinal NeoplasmsTreatment OutcomeIntra-arterial chemotherapyPilocytic astrocytomaRadiotherapyUnresectable tumors

Identifiers

PMID33548921
PMCPMC7956020

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.