Evidence map›Paper›PMID 31199091›Full record

ArticleBalkan medical journal2019

O6-methylguanine-DNA Methyltransferase Promoter Methylation in Patients with Rectal Adenocarcinoma After Chemoradiotherapy Treatment: Clinical Implications

Jaime A. Oliver, Jaime Gómez-Millán, Jose A. Medina, Laura Cabeza, Gloria Perazzoli, Cristina Jimenez-Luna, Kevin Doello, Raúl Ortiz

Open access · diamondAbstract read
In one paragraph

Article in Balkan medical journal, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact, top 92% 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

0 citing papers in PubMed, 0 citations in OpenAlex.

No citing paper in PubMed yet.

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 4 institutions in 2 countries.

Jaime A. OliverCenter for Cancer Research and Cell Biology, Queen’s University Belfast, Belfast, UK
Jaime Gómez-MillánDepartment of Radiation Oncology, Universitary Hospital Virgen de la Victoria, Málaga, Spain
Jose A. MedinaDepartment of Radiation Oncology, Universitary Hospital Virgen de la Victoria, Málaga, Spain
Laura CabezaInstitute of Biopathology and Regenerative Medicine, Center of Biomedical Research, University of Granada, Granada, Spain
Gloria PerazzoliInstitute of Biopathology and Regenerative Medicine, Center of Biomedical Research, University of Granada, Granada, Spain
Cristina Jimenez-LunaInstitute of Biopathology and Regenerative Medicine, Center of Biomedical Research, University of Granada, Granada, Spain
Kevin DoelloMedical Oncology Service, Universitary Hospital Virgen de las Nieves, Granada, Spain
Raúl OrtizInstitute of Biopathology and Regenerative Medicine, Center of Biomedical Research, University of Granada, Granada, SpainORCID 0000-0001-8409-5235
Universidad de Granada · ESHospital Clínico Universitario Virgen de la Victoria · ESInstituto de Investigación Biosanitaria de Granada · ESHospital Universitario Virgen de las Nieves · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Aims: To analyze the clinical relevance of O6-methylguanine-DNA methyltransferase in rectal adenocarcinoma treated with chemoradiotherapy followed by surgery. Methods: Tissue samples from 29 rectal adenocarcinoma patients were obtained after chemoradiotherapy. O6-methylguanine-DNA methyltransferase promoter methylation status was established by methylation-specific polymerase chain reaction. O6-methylguanine-DNA methyltransferase protein levels were determined by immunohistochemistry. Clinicopathologic variables, including treatment regression grade, recurrence, lymph node invasion, and stage and differentiation grade of the tumor, were determined. Results: The O6-methylguanine-DNA methyltransferase gene promoter was methylated in 81.5% of samples. Most patients (88.9%) showed low O6-methylguanine-DNA methyltransferase protein expression. O6-methylguanine-DNA methyltransferase methylation status was not correlated with any of the clinicopathological variables determined in rectal adenocarcinomas selected for chemoradiotherapy. Conclusion: O6-methylguanine-DNA methyltransferase methylation status is not correlated with clinicopathologic variables examined in rectal adenocarcinoma selected for chemoradiotherapy, although its role as a biomarker awaits further investigation.

Indexed as

AdultAgedAged, 80 and overChemoradiotherapyFemaleHumansImmunohistochemistryMaleMethylationMiddle AgedO(6)-Methylguanine-DNA MethyltransferasePolymerase Chain ReactionProspective StudiesRectal NeoplasmsRecurrenceO(6)-Methylguanine-DNA MethyltransferaseChemoradiotherapyO6-methylguanine-DNA methyltransferaserectal adenocarcinoma

Identifiers

PMID31199091
PMCPMC6711248
OpenAlexW2951058244

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.