Evidence map›Paper›PMID 32723677›Full record

ArticleGynecologic oncology2020

Women who develop ovarian cancer show an increase in serum calcium and a decrease in serum albumin. A longitudinal study in the Janus Serum Bank Cohort.

Gary G Schwartz, Steinar Tretli, Marilyn G Klug, Trude E Robsahm

Open access · hybridAbstract read
In one paragraph

Article in Gynecologic oncology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
1.8field-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

10 citing papers in PubMed, 15 citations in OpenAlex.

  1. Observational
  2. Article
  3. Article
  4. Article
  5. Biological characteristics of spontaneous ovarian cancer inZhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
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 at 2 institutions in 2 countries.

Gary G SchwartzDepartment of Population Health, University of North Dakota School of Medicine & Health Sciences, Grand Forks, ND, USA.
Steinar TretliDepartment of Research, Cancer Registry of Norway, Oslo, Norway.
Marilyn G KlugDepartment of Population Health, University of North Dakota School of Medicine & Health Sciences, Grand Forks, ND, USA.
Trude E RobsahmDepartment of Research, Cancer Registry of Norway, Oslo, Norway. Electronic address: trude.eid.robsahm@kreftregisteret.no.
Cancer Registry of Norway · NOGrand Forks Air Force Base · US

Funding

Tracking and Evaluation CoreU54GM128729 · NIGMS · UNIVERSITY OF NORTH DAKOTA · PI BASSON, MARC D. · 2018 to 2022
$20.3M
NIGMS NIH HHS U54 GM128729
6 · The paper itself

Abstract

backgroundOvarian cancer is associated with high serum calcium and low serum albumin in clinical and epidemiologic studies. Whether high calcium and low albumin predispose to ovarian cancer or reflect existing cancer is unclear.

objectiveTest the hypothesis that serum calcium increases and serum albumin decreases in women who develop ovarian cancer.

methodsTwo hundred and four women donated sera to the Janus Serum Bank in Norway pre- and post-diagnosis of ovarian cancer, donations separated by approximately 14 years. We measured calcium and albumin in these sera and calculated the albumin-corrected calcium. Sera were adjusted for patient age and storage time.

resultsPost-diagnosis, mean age- and storage-adjusted calcium increased, from 2.53 to 2.68 mmol/L (p < .001). Mean age- and storage-adjusted, albumin-corrected calcium increased from 2.3 to 2.7 mmol/L (p < .001). Conversely, mean age- and storage-adjusted albumin decreased, from a mean of 51.3 to 40.9 g/L (p < .001). Significant changes were observed in women with early stage and metastatic cancer.

conclusionsThese data support the hypothesis that calcium and albumin are serum biomarkers of extant ovarian cancer. Longitudinal changes in calcium and albumin may be useful in ovarian cancer early detection.

Indexed as

AdultBiomarkers, TumorCalciumEarly Detection of CancerFeasibility StudiesFemaleHumansLongitudinal StudiesMiddle AgedNorwayOvarian NeoplasmsPrognosisSerum Albumin, HumanBiomarkers, TumorCalciumSerum Albumin, HumanAlbuminBiomarkersCalciumCancer screeningOvarian cancer

Identifiers

PMID32723677
PMCPMC8296848
OpenAlexW3045158392

What OpenQuestion 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 OpenQuestion graph.