PIK3CA in HER2+ BC and pCR Trial

NCT05750693 | Unknown

• 1 other identifier: 4469
• Study Type: interventional
• Target: 58
• Locations: 1 country
• Sites: 1

Brief Summary

The goal of the study is to evaluate the impact of somatic PI3KCA mutations on pCR in HER2-positive early breast cancer in real life. The main question it aims to answer iS. \- Is there a correlation between PIK3CA mutations and response to neoadjuvant chemotherapy in HER2 early breast cancer? Participants who received neoadjuvant chemotherapy in addition to anti-Her2 target therapy will undergo PIK3CA analysis in order to answer to this question.

Conditions

HER2-positive Breast Cancer

Keywords

PIK3CA; Neoadjuvant chemotherapy; pathologic complete response; Her-2

Outcome Measures

Primary Outcomes (1)

• pathologic complete response

  To investigate the association of pCR and PIK3CA mutations in patients with locally advanced HER-2 positive Breast Cancer.

  7 months

Study Arms (1)

Patients who received neoadjuvant chemotherapy

EXPERIMENTAL

Breast cancer samples of paraffin embedded tissue, obtained from the waste material of the diagnostic core-biopsy, stored at the Pathological Anatomy Service, will be used in order to analyze PIK3CA mutations status.

Genetic: PIK3CA analysis

Interventions

PIK3CA analysis GENETIC

PIK3CA will be investigated together with HER2 in pre-NAD tissue samples, in order to evaluate the correlation with response to NAD chemotherapy, with a 16-gene MYRIAPOD kit. This evaluation will be performed on all 58 patients in the study for group (responders and not responders). Moreover 10 patient samples (5 responders and 5 non-responders) will be subjected to gene expression profile analysis. Specifically, a transcriptomic analysis will be performed on total RNA from one inch of cells (10-50 cells isolated by LCM from FFPE biopsy, RNA seq) which will allow to have the transcriptional profile for each patient of protein-coding transcripts (coding RNAs) and long non-coding RNAs. In addition, an NGS analysis by TSO500 will be performed in parallel, on the slide following the previous one, to have the genome sequence (523 genes) on the same 10-50 cells isolated by LCM from FFPE biopsy for the identification of any mutations.

Patients who received neoadjuvant chemotherapy

Eligibility Criteria

• Age: 18 Years+
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Written informed consent.
• Age older than 18 years.
• Unilateral or bilateral primary carcinoma of the breast, confirmed histologically by core biopsy.
• Tumor lesion in the breast with a palpable size of ≥ 2 cm and/or ≥ 1.5 cm by ultrasound or magnetic resonance imaging (MRI). In case of inflammatory carcinoma the extent of inflammation can be used as measurable lesion.
• American Joint Commission on Cancer stage II or III invasive breast cancer.
• Known estrogen (ER)- and progesterone (PgR)-receptor negative or positive tumors.
• Known HER-2/neu positive tumors, defined as HercepTest IHC 3+ or SISH+.
• Patients suitable for neoadjuvant chemotherapy
• Eastern Cooperative Oncology Group (ECOG) performance status (PS) ≤2 or Karnowsky performance status index at least 80%.
• Normal cardiac function must be confirmed by ECG and cardiac ultrasound (LVEF or shortening fraction) within 1 month prior to registration.
• Laboratory requirements:
• Hematology: Absolute neutrophil count (ANC) ≥ 1.5 x 109/L, platelets ≥ 100 x 109/L, Hemoglobin ≥ 10 g/dL.
• Hepatic function: Total bilirubin \< 1 x UNL, ASAT (SGOT) and ALAT (SGPT)≤ 2.5 x UNL, Alkaline phosphatase ≤ 5 UNL. Patients with ASAT and / or ALAT \> 1.5 x UNL associated with alkaline phosphatase \> 2.5 x UNL are not eligible for the study.
• Renal function: Creatinine ≤ 2 mg/dL, \< 1,25 UNL (or the calculated creatinine clearance ≥ 60 mL/min).
• Paraffin tumor tissue block made available.

You may not qualify if:

• Patients candidate for adjuvant chemotherapy.
• Evidence of distant metastasis.
• Prior chemotherapy for any malignancy.
• Prior radiation therapy for breast cancer.
• Pregnant or lactating patients.
• Inadequate general condition.
• Previous malignant disease.
• Known or suspected congestive heart failure (\>NYHA I) and/or coronary heart disease, angina pectoris requiring antianginal medication, previous history of myocardial infarction, evidence of transmural infarction on ECG, un- or poorly controlled arterial hypertension, rhythm abnormalities requiring permanent treatment, clinically significant valvular heart disease.
• History of significant neurological or psychiatric disorders that would prohibit the understanding and giving of informed consent.

Sponsors & Collaborators

• Fondazione Policlinico Universitario Agostino Gemelli IRCCS: lead

Study Sites (1)

Fondazione Policlinico Universitario Agostino Gemelli IRCCS

Rome, RM, 00168, Italy

Location

MeSH Terms

Conditions

Hereditary Sensory and Autonomic Neuropathies; Pathologic Complete Response

Condition Hierarchy (Ancestors)

Nervous System Malformations; Nervous System Diseases; Heredodegenerative Disorders, Nervous System; Neurodegenerative Diseases; Polyneuropathies; Peripheral Nervous System Diseases; Neuromuscular Diseases; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Genetic Diseases, Inborn; Disease Progression; Disease Attributes; Pathologic Processes; Pathological Conditions, Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 20, 2023
• First Posted: March 2, 2023
• Study Start: May 2, 2022
• Primary Completion: September 1, 2023
• Study Completion: September 1, 2023
• Last Updated: March 2, 2023

Record last verified: 2023-02

Data Sharing

• IPD Sharing: Will not share

Locations

IT (1)