Evidence map›Paper›PMID 30979045›Full record

ArticleCancers2019

Challenges and Inconsistencies in Using Lysophosphatidic Acid as a Biomarker for Ovarian Cancer.

Tsukasa Yagi, Muhammad Shoaib, Cyrus Kuschner, Mitsuaki Nishikimi, Lance B Becker, Annette T Lee, Junhwan Kim

Open access · goldAbstract read
In one paragraph

Article in Cancers, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 17% 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

17 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
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  13. The "Janus Face" of Platelets in Cancer.International journal of molecular sciences · 2020
    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

7 authors at 2 institutions in 1 country.

Tsukasa YagiCenter for Immunology and Inflammation, Feinstein Institute for Medical Research, 350 Community Dr., Manhasset, NY 11030, USA. tsuyagi-circ@umin.ac.jp.
Muhammad ShoaibCenter for Immunology and Inflammation, Feinstein Institute for Medical Research, 350 Community Dr., Manhasset, NY 11030, USA. mshoaib1@northwell.edu.
Cyrus KuschnerDonald and Barbara Zucker School of Medicine at Hofstra/Northwell, 500 Hofstra Blvd, Hempstead, NY 11549, USA. ckuschner1@pride.hofstra.edu.
Mitsuaki NishikimiCenter for Immunology and Inflammation, Feinstein Institute for Medical Research, 350 Community Dr., Manhasset, NY 11030, USA. mnishikimi@northwell.edu.
Lance B BeckerCenter for Immunology and Inflammation, Feinstein Institute for Medical Research, 350 Community Dr., Manhasset, NY 11030, USA. lance.becker@northwell.edu.
Annette T LeeDonald and Barbara Zucker School of Medicine at Hofstra/Northwell, 500 Hofstra Blvd, Hempstead, NY 11549, USA. alee@northwell.edu.
Junhwan KimCenter for Immunology and Inflammation, Feinstein Institute for Medical Research, 350 Community Dr., Manhasset, NY 11030, USA. jkim46@northwell.edu.
Feinstein Institute for Medical Research · USDonald & Barbara Zucker School of Medicine at Hofstra/Northwell · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Increased detection of plasma lysophosphatidic acid (LPA) has been proposed as a potential diagnostic biomarker in ovarian cancer, but inconsistency exists in these reports. It has been shown that LPA can undergo an artificial increase during sample processing and analysis, which has not been accounted for in ovarian cancer research. The aim of this study is to provide a potential explanation about how the artificial increase in LPA may have interfered with previous LPA analysis in ovarian cancer research. Using an established LC-MS method, we measured LPA and other lysophospholipid levels in plasma obtained from three cohorts of patients: non-cancer controls, patients with benign ovarian tumors, and those with ovarian cancer. We did not find the LPA level to be higher in cancer samples. To understand this inconsistency, we observed that LPA content changed more significantly than other lysophospholipids as a function of plasma storage time while frozen. Additionally, only LPA was found to be adversely impacted by incubation time depending on the Ethylenediaminetetraacetic acid (EDTA) concentration used during blood drawing. We also show that the inhibition of autotaxin effectively prevented artificial LPA generation during incubation at room temperature. Our data suggests that the artificial changes in LPA content may contribute to the discrepancies reported in literature. Any future studies planning to measure plasma LPA should carefully design the study protocol to consider these confounding factors.

Indexed as

diagnosisLC-MSlipidomicslysophospholipids

Identifiers

PMID30979045
PMCPMC6521627
OpenAlexW2938861144

What Socratic holds

Textmetadata
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 Socratic graph.