Evidence map›Paper›PMID 26611656›Full record

ArticleRadiation oncology (London, England)2015

Dosimetric analysis of the alopecia preventing effect of hippocampus sparing whole brain radiation therapy.

Anand Mahadevan, Carrie Sampson, Salvatore LaRosa, Scott R Floyd, Eric T Wong, Erik J Uhlmann, Soma Sengupta, Ekkehard M Kasper

Registry-linked trialOpen access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03543020 (Radiation- Induced Alopecia in Patients Undergoing Radiation Therapy to the Brain), which is not on this map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 25% 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.

NCT03543020 terminatednot on this mapstarted 2017, after this paper: background citation

Radiation- Induced Alopecia in Patients Undergoing Radiation Therapy to the Brain: A Prospective Clinical and Dosimetric Study of Primary and Metastatic Brain Tumour Patients

TypeobservationalSponsorFortis Memorial Research InstituteRan2017 to 2019Enrolled25ConditionsAlopecia, X-RaysArmsradiation therapy to brain
3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 1 synthesis or guideline pooled it, 29 citations in OpenAlex.

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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 1 institution in 1 country.

Anand MahadevanDepartment of Radiation Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA. amahadev@bidmc.harvard.edu.
Carrie SampsonDepartment of Radiation Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA. csampson@bidmc.harvard.edu.
Salvatore LaRosaDepartment of Radiation Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA. slarosa@bidmc.harvard.edu.
Scott R FloydDepartment of Radiation Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, 330 Brookline Avenue, Boston, MA, 02215, USA. sfloyd1@bidmc.harvard.edu.
Eric T WongDepartment of Neuro-Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA. ewong@bidmc.harvard.edu.
Erik J UhlmannDepartment of Neuro-Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA. euhlmann@bidmc.harvard.edu.
Soma SenguptaDepartment of Neuro-Oncology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA. ssengup1@bidmc.harvard.edu.
Ekkehard M KasperDepartment of Neurosurgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA. ekasper@bidmc.harvard.edu.
Beth Israel Deaconess Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWhole brain radiation therapy (WBRT) is widely used for the treatment of brain metastases. Cognitive decline and alopecia are recognized adverse effects of WBRT. Recently hippocampus sparing whole brain radiation therapy (HS-WBRT) has been shown to reduce the incidence of memory loss. In this study, we found that multi-field intensity modulated radiation therapy (IMRT), with strict constraints to the brain parenchyma and to the hippocampus, reduces follicular scalp dose and prevents alopecia.

methodsSuitable patients befitting the inclusion criteria of the RTOG 0933 trial received Hippocampus sparing whole brain radiation. On follow up, they were noticed to have full scalp hair preservation. 5 mm thickness of follicle bearing scalp in the radiation field was outlined in the planning CT scans. Conventional opposed lateral WBRT radiation fields were applied to these patient-specific image sets and planned with the same nominal dose of 30 Gy in 10 fractions. The mean and maximum dose to follicle bearing skin and Dose Volume Histogram (DVH) data were analyzed for conventional and HS-WBRT. Paired t-test was used to compare the means.

resultsAll six patients had fully preserved scalp hair and remained clinically cognitively intact 1-3 months after HS-WBRT. Compared to conventional WBRT, in addition to the intended sparing of the Hippocampus, HS-WBRT delivered significantly lower mean dose (22.42 cGy vs. 16.33 cGy, p < 0.0001), V24 (9 cc vs. 44 cc, p < 0.0000) and V30 (9 cc vs. 0.096 cc, p = 0.0106) to follicle hair bearing scalp and prevented alopecia. There were no recurrences in the Hippocampus area.

conclusionsHS-WBRT, with an 11-field set up as described, while attempting to conserve hippocampus radiation and maintain radiation dose to brain inadvertently spares follicle-bearing scalp and prevents alopecia.

Indexed as

AlopeciaBrain NeoplasmsCranial IrradiationHippocampusHumansRadiation InjuriesRadiometryRadiotherapy DosageRadiotherapy, Intensity-ModulatedRetrospective StudiesScalp

Identifiers

PMID26611656
PMCPMC4662000
OpenAlexW2175335038

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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.