Evidence map›Paper›PMID 25558171›Full record

ArticleBiostatistics, bioinformatics and biomathematics2013

An improvement of the 2ˆ(-delta delta CT) method for quantitative real-time polymerase chain reaction data analysis.

Xiayu Rao, Xuelin Huang, Zhicheng Zhou, Xin Lin

Registry-linked trialAbstract read
In one paragraph

Article in Biostatistics, bioinformatics and biomathematics, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07722637 (Evaluation of Ferroptosis-Related Biomarkers in Individuals With Coronary Artery Disease), which is not on this map. Cited by 1,179 papers.

0numbers the graph read from it
0cells of the map it votes in
1,179citing papers in PubMed
–field-weighted citation impact
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.

NCT07722637 narecruitingnot on this mapstarted 2026, after this paper: background citation

Evaluation of Ferroptosis-Related Biomarkers in Individuals With Coronary Artery Disease: The Impact of Cardiac Rehabilitation

TypeinterventionalSponsorTC Erciyes UniversityRan2026 to 2026Enrolled90ConditionsCoronary Artery Disease (CAD), Cardiac Rehab, FerroptosisArmsCardiac Rehabilitation
3 · Its place in the literature

Who cites it

1,179 citing papers in PubMed.

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  13. Biochemistry and biophysics reports · 2026
    Article
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  17. Overexpression ofInternational journal of molecular sciences · 2026
    Article
  18. Article
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  20. IMD-1 Protects SH-SY5Y Cells Against HNeurochemical research · 2026
    Article

1,119 more citing papers are in PubMed but not listed here.

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

4 authors.

Xiayu RaoDivision of Biostatistics, The University of Texas School of Public Health, Houston, Texas 77030, USA.
Xuelin HuangDepartment of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77230, USA.
Zhicheng ZhouDepartment of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77230, USA.
Xin LinDepartment of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77230, USA.

Funding

Tumor Evolution and Metastasis ProgramP30CA016672 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI Kathrin Milbury · 1985 to 2026
$290.8M
University of Texas M.D. Anderson Cancer SPORE-LeukemiaP50CA100632 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI HUANG, XUELIN · 2003 to 2023
$43.7M
THE THERAPY OF AMLP01CA055164 · NCI · UNIVERSITY OF TX MD ANDERSON CAN CTR · PI BERRY, DONALD A · 1992 to 2011
$25.3M
NCI NIH HHS P01 CA055164NCI NIH HHS P30 CA016672NCI NIH HHS P50 CA100632
6 · The paper itself

Abstract

backgroundThe 2

resultsOur method takes into account the PCR efficiency of each individual sample. In addition, it eliminates the need for background fluorescence estimation or subtraction because the background can be cancelled out using the differencing strategy. The DNA amount for a certain gene and the relative DNA amount among different samples estimated using our method were closer to the true values compared to the results of the 2

conclusionsThe improved method, the individual efficiency corrected calculation, produces more accurate estimates in relative gene expression than the 2

Identifiers

PMID25558171
PMCPMC4280562

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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.