Evidence map›Paper›PMID 31684910›Full record

ArticleBMC cancer2019

SMAD4 Y353C promotes the progression of PDAC.

Zusen Wang, Yongxing Li, Shixiong Zhan, Lu Zhang, Shun Zhang, Qian Tang, Miaomiao Li, Zhen Tan, Shiguo Liu, Xiaoming Xing

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.5field-weighted citation impact, top 15% 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

19 citing papers in PubMed, 23 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

Zusen WangDepartment of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China.
Yongxing LiDepartment of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China.
Shixiong ZhanDepartment of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China.
Lu ZhangPrenatal Diagnosis Center, Affiliated Hospital of Qingdao University, Qingdao, China.
Shun ZhangDepartment of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China.
Qian TangPrenatal Diagnosis Center, Affiliated Hospital of Qingdao University, Qingdao, China.
Miaomiao LiPrenatal Diagnosis Center, Affiliated Hospital of Qingdao University, Qingdao, China.
Zhen TanDepartment of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Qingdao University, Qingdao, China.
Shiguo LiuPrenatal Diagnosis Center, Affiliated Hospital of Qingdao University, Qingdao, China. liushiguo2002@126.com.
Xiaoming XingDepartment of Pathology, Affiliated Hospital of Qingdao University, Qingdao, China. edithxing@126.com.
Affiliated Hospital of Qingdao University · CNQingdao University · CN

Funding

CSRD VA 1
6 · The paper itself

Abstract

backgroundSMAD4 is frequently inactivated and associated with a poor prognosis in pancreatic ductal adenocarcinoma (PDAC). Abnormal SMAD4 expression also plays an important role in the malignant progression of PDAC.

methodsWe investigated SMAD4 status in PDAC by immunohistochemical methods to explore the relationships between SMAD4 expression and clinicopathological features and then detected SMAD4 mutations by Sanger sequencing in 95 patients with PDAC to identify new mutation sites in PDAC. We further evaluated the effects of a missense mutation, Y353C, in the SMAD4 MH2 domain, on cell proliferation and migration in vitro.

resultsImmunohistochemistry showed that the expression of SMAD4 in PDAC carcinoma tissue was significantly lower than that in normal pancreatic tissue, and negative SMAD4 expression was closely related to tumour diameter, staging, lymph node metastasis and differentiation. Sanger sequencing analysis showed that the rate of SMAD4 mutation was 11.8% in 85 PDAC cases, and the novel SMAD4 Y353C missense mutation identified in this study promoted cell migration and invasion without affecting cell proliferation in vitro. Furthermore, SMAD4 Y353C resulted in reduced expression of E-cadherin and increased expression of Vimentin compared with wild-type SMAD4 overexpression.

conclusionThis study supports the key role of SMAD4 as a tumour suppressor gene in PDAC and shows that SMAD4 Y353C is associated with poor progression of PDAC.

Indexed as

CadherinsCarcinogenesisCarcinoma, Pancreatic DuctalCell Line, TumorCell MovementCell ProliferationFemaleGene Expression Regulation, NeoplasticHumansImmunohistochemistryMaleMiddle AgedMutation, MissensePancreatic NeoplasmsSmad4 ProteinVimentinCadherinsSmad4 ProteinVimentinE-cadherinMutationPancreatic ductal adenocarcinomaSMAD4Vimentin

Identifiers

PMID31684910
PMCPMC6829834
OpenAlexW2984610317

What OpenQuestion holds

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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.