Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 241

The DOI matches its Crossref record.

PCNA and Ki67 expression in breast carcinoma: correlations with clinical and biological variables.

Open access
Leonardi, E, Girlando, S, Serio, G, Mauri, F A, Perrone, G, Scampini, S, Dalla Palma, P, Barbareschi, M·1992·Journal of Clinical Pathology

Abstract

AIMS: To investigate the expression of two cell cycle related antigens (proliferating cell nuclear antigen (PCNA) and Ki67 related antigen) in a series of breast cancers; and the possible correlations between the PCNA and Ki67 labelling indexes (PCNA-LI and Ki67-LI) and their associations with other biological and clinicopathological variables. METHODS: Ninety six ductal and 10 lobular carcinoma specimens were investigated. Samples were fixed in formalin and in Methacarnoy for localisation of PCNA. Ki67 was immunostained on frozen sections. The PCNA-LI and Ki67-LI were evaluated in relation to tumour size, mitotic count, histological grade, nodal state as well as receptor content and altered expression of the p53 gene. RESULTS: PCNA-LI did not correlate with Ki67-LI, nor was it associated with any other variable examined. A high KI67-LI (above the median value of 13.5) was associated with high grade and mitotic count, negative receptor content, and altered expression of the p53 gene, but not with other variables. CONCLUSIONS: The PCNA-LI does not seem to be a substitute for the Ki67-LI in evaluating the growth fraction in breast cancer.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1136/jcp.45.5.416

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 241

Metadata

Authors
Leonardi, E., Girlando, S., Serio, G., Mauri, F. A., Perrone, G., Scampini, S., Dalla Palma, P., & Barbareschi, M.
Venue
Journal of Clinical Pathology
Publisher
BMJ
Published
1992-05
Volume
45
Issue
5
Pages
416-419
ISSN
  • 0021-9746 (ISSN-L)
  • 1472-4146
OpenAlex
W1984975924
Cited by
241
References
0
FWCI
9.78
Type
journal article
Language
en
Open access
bronze

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: PCNA and Ki67 expression in breast carcinoma: correlations with clinical and biological variables. https://app.cochat.ai/papers/10.1136/jcp.45.5.416
The paper
Leonardi, E., Girlando, S., Serio, G., Mauri, F. A., Perrone, G., Scampini, S., Dalla Palma, P., & Barbareschi, M. (1992). PCNA and Ki67 expression in breast carcinoma: correlations with clinical and biological variables. Journal of Clinical Pathology. https://doi.org/10.1136/jcp.45.5.416

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.