Evidence map›Paper›PMID 24551282›Full record

ArticleInternational journal of clinical and experimental pathology2014

Prognostic relevance of Period1 (Per1) and Period2 (Per2) expression in human gastric cancer.

Han Zhao, Zhao-Lei Zeng, Jing Yang, Ying Jin, Miao-Zhen Qiu, Xiao-Ye Hu, Juan Han, Kai-Yan Liu, Jian-Wei Liao, Rui-Hua Xu and 1 more

Abstract read
In one paragraph

Article in International journal of clinical and experimental pathology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 2 pooled it
–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.

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

44 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  18. Role of Melatonin in Cancer: Effect on Clock Genes.International journal of molecular sciences · 2023
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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

11 authors.

Han ZhaoDepartment of The Affiliated Tumor Hospital of Guangzhou Medical University Guangzhou, Guangdong, 510060, China.
Zhao-Lei ZengDepartment of State Key Laboratory of Oncology in Southern China Guangzhou, Guangdong, 510060, China ; Department of Experimental Research, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Jing YangDepartment of State Key Laboratory of Oncology in Southern China Guangzhou, Guangdong, 510060, China ; Department of Experimental Research, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Ying JinDepartment of Medical Oncology, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Miao-Zhen QiuDepartment of Medical Oncology, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Xiao-Ye HuDepartment of The Affiliated Tumor Hospital of Guangzhou Medical University Guangzhou, Guangdong, 510060, China.
Juan HanDepartment of The Affiliated Tumor Hospital of Guangzhou Medical University Guangzhou, Guangdong, 510060, China.
Kai-Yan LiuDepartment of State Key Laboratory of Oncology in Southern China Guangzhou, Guangdong, 510060, China ; Department of Experimental Research, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Jian-Wei LiaoDepartment of State Key Laboratory of Oncology in Southern China Guangzhou, Guangdong, 510060, China ; Department of Experimental Research, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Rui-Hua XuDepartment of Medical Oncology, Sun Yat-sen University Cancer Center Guangzhou, Guangdong, 510060, China.
Qing-Feng ZouDepartment of The Affiliated Tumor Hospital of Guangzhou Medical University Guangzhou, Guangdong, 510060, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Period1 (Per1) and Period2 (Per2) are members of the circadian genes. Mounting evidence suggests that the deregulation of the circadian clock plays an important role in the development of mammalian cancer. However, the expression and clinical significance of Per1 and Per2 in gastric cancer is still unexplored. Here, we evaluated the expression pattern of Per1 and Per2 in 246 gastric cancer specimens and their adjacent, non-tumorous tissues using immunohistochemical assays. Per1 expression was significantly associated with clinical stage (p < 0.001), depth invasion (p < 0.001), lymph node metastasis (p < 0.001) and pathologic differentiation (p < 0.001). On the other hand, Per2 was associated with clinical stage (p = 0.021) and depth invasion (p = 0.007). Per1 expression was positively correlated with Per2 expression in the 246 gastric cancer patients (r = 0.378, p < 0.001), and the expression levels of Per1 and Per2 were down-regulated in gastric cancer tissues when compared with adjacent, non-tumorous tissues in 45 gastric cancer samples (p < 0.001, p = 0.003). Patients with lower Per1 and Per2 tumor expression had a shorter survival time than those with higher expression. Univariate and Multivariate analyses indicated that Per2 expression is an independent prognostic factor (p = 0.023). Our results demonstrate that Per1 and Per2 may play important roles in tumor development, invasion and prognosis, and Per2 may serve as a novel prognostic biomarker of human gastric cancer.

Indexed as

AdultAgedBiomarkers, TumorCell DifferentiationChi-Square DistributionFemaleHumansImmunohistochemistryKaplan-Meier EstimateLymphatic MetastasisMaleMiddle AgedMultivariate AnalysisNeoplasm InvasivenessNeoplasm StagingPeriod Circadian ProteinsBiomarkers, TumorPER1 protein, humanPER2 protein, humanPeriod Circadian ProteinsCircadian clock geneexpressiongastric cancerPer1Per2prognostic

Identifiers

PMID24551282
PMCPMC3925906

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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.