Evidence map›Paper›PMID 20548328›Full record

ArticleThe pharmacogenomics journal2011

High-efficiency genotype analysis from formalin-fixed, paraffin-embedded tumor tissues.

M J Sikora, J N Thibert, J Salter, M Dowsett, M D Johnson, J M Rae

Open access · greenAbstract read
In one paragraph

Article in The pharmacogenomics journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.7field-weighted citation impact, top 32% 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

12 citing papers in PubMed, 18 citations in OpenAlex.

  1. Trial
  2. Article
  3. The association between two genetic polymorphisms inSaudi journal of biological sciences · 2022
    Article
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  8. Review
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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

6 authors at 3 institutions in 2 countries.

M J SikoraDepartment of Pharmacology, University of Michigan Medical Center, Ann Arbor, MI 48109, USA.
J N Thibert
J Salter
M Dowsett
M D Johnson
J M Rae
University of Michigan–Ann Arbor · USRoyal Marsden Hospital · GBGeorgetown University Medical Center · US

Funding

Georgetown-Howard Universities Center for Clinical and Translational Science (GHUUL1TR000101 · NCATS · GEORGETOWN UNIVERSITY · PI MELLMAN, THOMAS A, VERBALIS, JOSEPH G · 2012 to 2015
$19.3M
TAMAXIFEN PHARMACOGENETICSU01GM061373 · NIGMS · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI FLOCKHART, DAVID ALASTAIR · 2000 to 2009
$17.0M
INTERDEPARTMENTAL TRAINING IN PHARMACOLOGICAL SCIENCEST32GM007767 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI ISOM, LORI L. · 1985 to 2019
$10.2M
Genetic Predictors of Anti-Estrogen Clinical Activity in Breast Cancer PatientsR01GM099143 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI RAE, JAMES MICHAEL · 2011 to 2015
$1.6M
Breast Cancer Now BREAST CANCER NOW RESEARCH CENTRENCATS NIH HHS UL1 TR000101NIGMS NIH HHS R01 GM099143NIGMS NIH HHS T-32 GM007767NIGMS NIH HHS T32 GM007767NIGMS NIH HHS U01 GM061373NIGMS NIH HHS U-01 GM61373
6 · The paper itself

Abstract

Single-nucleotide polymorphisms (SNPs) can be assayed using DNA isolated from archival formalin-fixed, paraffin-embedded (FFPE) samples, making retrospective pharmacogenetic studies possible. In this study, we describe methods that significantly increase the number of SNP determinations possible using FFPE samples. Quantifying the amount of DNA amenable to PCR (amplification-quality DNA, AQ-DNA) allows a significant reduction in the amount of sample required for Taqman-based SNP assays. Optimizing AQ-DNA input increases PCR amplification efficiency and SNP determination accuracy. DNA was extracted from 39 FFPE tumor sections and matched tumor and stromal cores, which were of the type used to generate tissue microarrays. Sections and tumor cores yielded sufficient AQ-DNA for more than 1000 SNP determinations. Seven SNPs were assessed following individual assay optimization for minimal AQ-DNA. Genotypes from tumor cores for single SNPs were 92.3-100% concordant with those obtained from sections. Using these methods, the number of SNP genotypes that can be determined from single FFPE samples is greatly increased expanding the genetic association studies possible from limited archival specimens. The use of tumor cores is of particular importance as the harvesting of tumor cores has minimal impact on the utility of the donor blocks for other purposes.

Indexed as

Genotyping TechniquesDNAFormaldehydeGenetic Association StudiesGenotypeHumansMicroarray AnalysisNeoplasmsParaffin EmbeddingPolymerase Chain ReactionPolymorphism, Single NucleotideDNAFormaldehyde

Identifiers

PMID20548328
PMCPMC2996486
OpenAlexW2013238324

What OpenQuestion holds

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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.