Evidence map›Paper›PMID 25954997›Full record

ArticlePloS one2015

Extended RAS and BRAF Mutation Analysis Using Next-Generation Sequencing.

Kazuko Sakai, Junji Tsurutani, Takeharu Yamanaka, Azusa Yoneshige, Akihiko Ito, Yosuke Togashi, Marco A De Velasco, Masato Terashima, Yoshihiko Fujita, Shuta Tomida and 3 more

Open access · goldAbstract readValidation Study
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 4 pooled it
2.7field-weighted citation impact, top 8% 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

20 citing papers in PubMed, 4 syntheses or guidelines pooled it, 34 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Guideline
  4. Molecular Biomarkers for the Evaluation of Colorectal Cancer.American journal of clinical pathology · 2017
    Guideline
  5. Trial
  6. Trial
  7. Performance of IdyllaInternational journal of clinical oncology · 2022
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Molecular Testing for Gastrointestinal Cancer.Journal of pathology and translational medicine · 2017
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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

13 authors at 2 institutions in 1 country.

Kazuko SakaiDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Junji TsurutaniDepartment of Medical Oncology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Takeharu YamanakaDepartment of Biostatistics, Yokohama City University, Yokohama, Kanagawa, Japan.
Azusa YoneshigeDepartment of Pathology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Akihiko ItoDepartment of Pathology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Yosuke TogashiDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Marco A De VelascoDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Masato TerashimaDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Yoshihiko FujitaDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Shuta TomidaDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Takao TamuraDepartment of Medical Oncology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Kazuhiko NakagawaDepartment of Medical Oncology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Kazuto NishioDepartment of Genome Biology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.
Kindai University · JPYokohama City University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Somatic mutations in KRAS, NRAS, and BRAF genes are related to resistance to anti-EGFR antibodies in colorectal cancer. We have established an extended RAS and BRAF mutation assay using a next-generation sequencer to analyze these mutations. Multiplexed deep sequencing was performed to detect somatic mutations within KRAS, NRAS, and BRAF, including minor mutated components. We first validated the technical performance of the multiplexed deep sequencing using 10 normal DNA and 20 formalin-fixed, paraffin-embedded (FFPE) tumor samples. To demonstrate the potential clinical utility of our assay, we profiled 100 FFPE tumor samples and 15 plasma samples obtained from colorectal cancer patients. We used a variant calling approach based on a Poisson distribution. The distribution of the mutation-positive population was hypothesized to follow a Poisson distribution, and a mutation-positive status was defined as a value greater than the significance level of the error rate (α = 2 x 10(-5)). The cut-off value was determined to be the average error rate plus 7 standard deviations. Mutation analysis of 100 clinical FFPE tumor specimens was performed without any invalid cases. Mutations were detected at a frequency of 59% (59/100). KRAS mutation concordance between this assay and Scorpion-ARMS was 92% (92/100). DNA obtained from 15 plasma samples was also analyzed. KRAS and BRAF mutations were identified in both the plasma and tissue samples of 6 patients. The genetic screening assay using next-generation sequencer was validated for the detection of clinically relevant RAS and BRAF mutations using FFPE and liquid samples.

Indexed as

DNA Mutational AnalysisHigh-Throughput Nucleotide SequencingCell Line, TumorColonColorectal NeoplasmsDNAFemaleGTP PhosphohydrolasesHumansMaleMembrane ProteinsProto-Oncogene Proteins B-rafProto-Oncogene Proteins p21(ras)RectumBRAF protein, humanDNAGTP PhosphohydrolasesKRAS protein, humanMembrane ProteinsNRAS protein, humanProto-Oncogene Proteins B-rafProto-Oncogene Proteins p21(ras)

Identifiers

PMID25954997
PMCPMC4425536
OpenAlexW1586897478

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.