Negative Hormone Receptor and APOcrine Lobular Invasive Breast Cancer (NAPOLI)

May 23, 2026 updated by: Ferrucci Massimo, Istituto Oncologico Veneto IRCCS

NAPOLI Study: Negative Hormone Receptor and APOcrine Lobular Invasive Breast Cancer - A Retrospective Multicenter Observational Study

The NAPOLI Study is a retrospective multicenter observational study designed to characterize negative hormone receptor and apocrine lobular invasive breast cancer. The study will collect real-world clinicopathological, molecular, therapeutic and outcome data from patients diagnosed and treated at participating centers. The aim is to describe the clinical behavior, pathological features, receptor profile, treatments received and oncologic outcomes of this rare breast cancer subtype.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Estimated)

250

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

N/A

Sampling Method

Non-Probability Sample

Study Population

Patients diagnosed between January 1, 2010 and December 31, 2025 will be included. Follow-up will be collected until the most recent available clinical update.

Description

Inclusion Criteria:

  • Female or male patients aged ≥18 years.
  • Histologically confirmed invasive lobular carcinoma of the breast.
  • Presence of apocrine differentiation/features documented in pathology report or confirmed by local pathology review.
  • Negative hormone receptors.
  • Diagnosis and/or treatment at one of the participating centers.
  • Availability of essential clinicopathological data.
  • Availability of follow-up data, when applicable.

Exclusion Criteria:

  • Pure ductal carcinoma without lobular invasive component.
  • Metastatic tumor to the breast from non-breast primary cancer.
  • Insufficient pathological documentation to confirm eligibility.
  • Missing essential clinical data.
  • Patients who denied consent for retrospective data use, where applicable by local regulations.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Clinicopathological characterization of apocrine invasive lobular breast carcinoma
Time Frame: Through study completion, an average of 5 years
Measured by descriptive analysis of tumor size, grade, nodal status, ER, PgR, HER2, Ki-67, androgen receptor, stage, histological features and treatment received.
Through study completion, an average of 5 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Disease-Free Survival
Time Frame: Through study completion, an average of 5 years
Through study completion, an average of 5 years
Overall Survival
Time Frame: Through study completion, an average of 5 years
Through study completion, an average of 5 years
Recurrence Rate
Time Frame: Through study completion, an average of 5 years
Measured as local, regional or distant recurrence.
Through study completion, an average of 5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Istituto Oncologico Veneto IRCCS

Investigators

  • Study Chair: Francesco Milardi, MD, Veneto Institute of Oncology IRCCS

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

May 1, 2026

Primary Completion (Estimated)

May 1, 2027

Study Completion (Estimated)

December 31, 2027

Study Registration Dates

First Submitted

May 19, 2026

First Submitted That Met QC Criteria

May 23, 2026

First Posted (Actual)

May 29, 2026

Study Record Updates

Last Update Posted (Actual)

May 29, 2026

Last Update Submitted That Met QC Criteria

May 23, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CESC IOV 2023-61

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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