Evidence map›Paper›PMID 26530761›Full record

ArticleInternational journal of radiation oncology, biology, physics2015

A Radiation-Induced Hippocampal Vascular Injury Surrogate Marker Predicts Late Neurocognitive Dysfunction.

Reza Farjam, Priyanka Pramanik, Madhava P Aryal, Ashok Srinivasan, Christopher H Chapman, Christina I Tsien, Theodore S Lawrence, Yue Cao

Abstract read
In one paragraph

Article in International journal of radiation oncology, biology, physics, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 6% 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

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

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  4. Effect of the Maximum Dose on White Matter Fiber Bundles Using Longitudinal Diffusion Tensor Imaging.International journal of radiation oncology, biology, physics · 2016
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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 3 institutions in 1 country.

Reza FarjamDepartment of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York.
Priyanka PramanikDepartment of Radiation Oncology, University of Michigan, Ann Arbor, Michigan.
Madhava P AryalDepartment of Radiation Oncology, University of Michigan, Ann Arbor, Michigan.
Ashok SrinivasanDepartment of Radiology, University of Michigan, Ann Arbor, Michigan.
Christopher H ChapmanDepartment of Radiation Oncology, University of Michigan, Ann Arbor, Michigan.
Christina I TsienDepartment of Radiation Oncology, Washington University in St. Louis, St. Louis, Missouri.
Theodore S LawrenceDepartment of Radiation Oncology, University of Michigan, Ann Arbor, Michigan.
Yue CaoDepartment of Radiation Oncology, University of Michigan, Ann Arbor, Michigan; Department of Radiology, University of Michigan, Ann Arbor, Michigan; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan. Electronic address: yuecao@umich.edu.
University of Michigan–Ann Arbor · USMemorial Sloan Kettering Cancer Center · USWashington University in St. Louis · US

Funding

Functional Imaging as a Biomaker for Neurotoxicity After Brain IrradiationR01NS064973 · NINDS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CAO, YUE · 2009 to 2013
$1.7M
NINDS NIH HHS R01 NS064973
6 · The paper itself

Abstract

purposeWe aimed to develop a hippocampal vascular injury surrogate marker for early prediction of late neurocognitive dysfunction in patients receiving brain radiation therapy (RT). METHODS AND MATERIALS: Twenty-seven patients (17 males and 10 females, 31-80 years of age) were enrolled in an institutional review board-approved prospective longitudinal study. Patients received diagnoses of low-grade glioma or benign tumor and were treated by (3D) conformal or intensity-modulated RT with a median dose of 54 Gy (50.4-59.4 Gy in 1.8-Gy fractions). Six dynamic-contrast enhanced MRI scans were performed from pre-RT to 18-month post-RT, and quantified for vascular parameters related to blood-brain barrier permeability, K(trans), and the fraction of blood plasma volume, Vp. The temporal changes in the means of hippocampal transfer constant K(trans) and Vp after starting RT were modeled by integrating the dose effects with age, sex, hippocampal laterality, and presence of tumor or edema near a hippocampus. Finally, the early vascular dose response in hippocampi was correlated with neurocognitive dysfunction at 6 and 18 months post-RT.

resultsThe mean K(trans) Increased significantly from pre-RT to 1-month post-RT (P<.0004), which significantly depended on sex (P<.0007) and age (P<.00004), with the dose response more pronounced in older females. Also, the vascular dose response in the left hippocampus of females correlated significantly with changes in memory function at 6 (r=-0.95, P<.0006) and 18-months (r=-0.88, P<.02) post-RT.

conclusionsThe early hippocampal vascular dose response could be a predictor of late neurocognitive dysfunction. A personalized hippocampus sparing strategy may be considered in the future.

Indexed as

AdultAgedAged, 80 and overAge FactorsBlood-Brain BarrierBrain NeoplasmsCognition DisordersCranial IrradiationDose-Response Relationship, RadiationFemaleGliomaHippocampusHumansMaleMemory DisordersMiddle Aged

Identifiers

PMID26530761
PMCPMC4822411
OpenAlexW1945634806

What OpenQuestion holds

Textmetadata
LicenceTDM
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.