Evidence map›Paper›PMID 22930220›Full record

ArticleCancer2013

Expression of aldehyde dehydrogenase 1 as a marker of mammary stem cells in benign and malignant breast lesions of Ghanaian women.

Theresa Schwartz, Azadeh Stark, Judy Pang, Baffour Awuah, Celina G Kleer, Solomon Quayson, Stephanie Kingman, Francis Aitpillah, Francis Abantanga, Evelyn Jiagge and 8 more

Open access · bronzeAbstract read
In one paragraph

Article in Cancer, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 9% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Review
  5. Article
  6. Review
  7. Article
  8. Immunohistochemical Expression of CDIranian journal of otorhinolaryngology · 2016
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. 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

18 authors at 6 institutions in 3 countries.

Theresa SchwartzDepartment of Surgery, University of Michigan, Ann Arbor, MI, USA.
Azadeh Stark
Judy Pang
Baffour Awuah
Celina G Kleer
Solomon Quayson
Stephanie Kingman
Francis Aitpillah
Francis Abantanga
Evelyn Jiagge
Joseph K Oppong
Ernest Osei-Bonsu
Iman Martin
Xiaowei Yan
Kathy Toy
Ernest Adjei
Max Wicha
Lisa A Newman
Komfo Anokye Teaching Hospital · GHUniversity of Michigan–Ann Arbor · USMichigan Center for Translational Pathology · USGeisinger Health System · USHenry Ford Health System · USUniversity of Illinois Chicago · US

Funding

Role of EZH2 in Breast Cancer ProgressionR01CA107469 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Celina G Kleer · 2005 to 2026
$5.9M
Regulation of Breast Stem Cells by the MicroenvironmentR01CA101860 · NCI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WICHA, MAX S. · 2004 to 2013
$2.4M
NCI NIH HHS R01 CA101860NCI NIH HHS R01 CA107469
6 · The paper itself

Abstract

backgroundBreast cancers that are negative for the estrogen receptor (ER), the progesterone receptor (PR), and the HER2 (human epidermal growth factor receptor 2) marker are more prevalent among African women, and the biologically aggressive nature of these triple-negative breast cancers (TNBCs) may be attributed to their mammary stem cell features. Little is known about expression of the mammary stem cell marker aldehyde dehydrogenase 1 (ALDH1) in African women. Novel data are reported regarding ALDH1 expression in benign and cancerous breast tissue of Ghanaian women.

methodsFormalin-fixed, paraffin-embedded specimens were transported from the Komfo Anoyke Teaching Hospital in Kumasi, Ghana to the University of Michigan for centralized histopathology study. Expression of ER, PR, HER2, and ALDH1 was assessed by immunohistochemistry. ALDH1 staining was further characterized by its presence in stromal versus epithelial and/or tumor components of tissue.

resultsA total of 173 women contributed to this study: 69 with benign breast conditions, mean age 24 years, and 104 with breast cancer, mean age 49 years. The proportion of benign breast conditions expressing stromal ALDH1 (n = 40, 58%) was significantly higher than those with cancer (n = 44, 42.3%) (P = .043). Among the cancers, TNBC had the highest prevalence of ALDH1 expression, either in stroma or in epithelial cells. More than 2-fold higher likelihood of ALDH1 expression was observed in TNBC cases compared with other breast cancer subtypes (odds ratio = 2.38, 95% confidence interval 1.03-5.52, P = .042).

conclusionsALDH1 expression was higher in stromal components of benign compared with cancerous lesions. Of the ER-, PR-, and HER2-defined subtypes of breast cancer, expression of ALDH1 was highest in TNBC.

Indexed as

AdolescentAdultAldehyde Dehydrogenase 1 FamilyBiomarkers, TumorBreast NeoplasmsCarcinomaCohort StudiesFemaleGene Expression Regulation, EnzymologicGene Expression Regulation, NeoplasticGhanaHumansIsoenzymesMammary Glands, HumanMiddle AgedNeoplastic Stem CellsAldehyde Dehydrogenase 1 FamilyALDH1A1 protein, humanBiomarkers, TumorIsoenzymesRetinal Dehydrogenase

Identifiers

PMID22930220
PMCPMC5045032
OpenAlexW1566310927

What OpenQuestion holds

Textmetadata
LicenceTDM
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.