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NCT04824014

Evaluation of the Diagnostic, Prognostic and Follow-up Potential of 4,16α-[16α-18F]Difluoro-11β-methoxyestradiol (4FMFES) PET Imaging for Estrogen Receptor Positive Advanced Breast Cancers

This proposed project will focus on 3 specific aims: Compare and complement 4FMFES-PET with FDG-PET and conventional imaging modalities, and evaluate how they improved prognosis and staging of ER+ advanced breast cancer patients; Correlate 4FMFES/FDG uptake and staging with pathological data (histology, receptor status, grade), including distal biopsy metastases sampling; Correlate 4FMFES/FDG uptake and staging with longitudinal outcomes (treatment response, progression-free survival, time-to-relapse) to determine which cohort of patient benefit most from 4FMFES.

NCT06203119

Construction and Clinical Translation of ACE Targeted Nuclear Medicine Imaging Probe

This is an open-label positron emission tomography/computed tomography (PET/CT) study to investigate the clinical predictive value of 68Ga-DOTA-BPP in subjects with triple-negative breast cancer. The visual and semiquantitative methods will be used to assess the PET/CT images

NCT05088785

Dynamic and Test-retest Whole Body [18F]FES PET Imaging in Patients With Metastatic ER+ Breast Cancer

16a-18F-fluoro-17b-estradiol ([18F]FES) is radioactive labeled estradiol, developed for in vivo visualization of the estrogen receptor (ER) using positron emission tomography (PET). To date, [18F]FES PET has been mainly explored as a diagnostic imaging tool to assess ER expression, thereby identifying locations of disease and their potential sensitivity to endocrine therapy, respectively. The primary aim of this project is to extend the application of [18F]FES PET as a baseline diagnostic imaging biomarker for ER expression to use it as an (early) treatment response marker. However, for such an application, visual assessment alone may not be sufficient and a more rigorous quantitative image analysis is needed. Therefore, in this project we shall first derive the optimal pharmacokinetic model for full quantitative analysis of [18F]FES uptake and, subsequently, we shall assess the validity of simplified, clinically feasible, quantitative parameters of [18F]FES uptake in 5 patients with metastatic estrogen receptor positive (ER+) breast cancer (part A). In addition, the repeatability of these simplified parameters will then be investigated in another 10 patients (part B).

NCT04758416

A Phase II, Single-center STudy on the vAlue of Non-invasive Dual-Pet(18F-FES PET and 68Ga-HER2-Affibody PET)InformatiOn IN Subtype of Metastatic Breast Cancer(MBC)

Study on the Value of Non-invasive Dual-Pet(18F-FES PET and 68Ga-HER2-Affibody PET) Information in Subtype of Metastatic Breast Cancer

NCT05955833

89Zr-DFO*-Trastuzumab PET in Patients With Gastric or Breast Cancer - a Pilot Study

The goal of this clinical trial is to test a new PET tracer in patients with HER2-positive breast or gastric cancer. This tracer is made of radioactively labeled trastuzumab, and can show where HER2 is present in the body using a PET-scan. For this research, the investigators make PET-scans in people with HER2-positive, metastasized breast- or gastric cancer. The investigators will investigate if the new HER2-tracer correctly shows all tumor lesions. In the future, this method may be useful to help predict who will benefit from certain HER2-directed therapies.

NCT05535621

68Ga-HER2 Affibody PET/CT Imaging for HER2-Positive Cancer Patients

The prevalence of HER2 alterations in pan-cancer indicates a broader range of application of HER2-targeted therapies. immunohistochemistry (IHC) or amplification by fluorescence in situ hybridization (FISH) is currently the most commonly used method for evaluation of HER-2 status in cancer patients. However, biopsies are spatiotemporally limited because of the highly heterogeneous expression of HER2. Patients with false-negative HER2 results may miss the chance for targeted therapy. Additionally, the HER2 status can change during the disease process. A investigational imaging tracer named 68Ga-HER2 Affibody binds to HER-2 receptors. Previous studies in human have shown the efficacy of 68Ga-HER2 Affibody in detecting HER2 positive breast cancer and gastric cancer without any observed toxicity. However, studies are still insufficient and limited to breast cancer and gastric cancer. The investigators hypothesized that 68Ga-HER2 Affibody PET imaging can noninvasively assess HER2 status in metastatic or recurrent solid tumors including breast cancer, gastrointestinal tumors, head and neck squamous tumors, bladder cancer, lung cancer and uterine tumors lesion. In this study, efficacy of 68Ga-HER2 Affibody in detecting HER2 positive cancer lesions and change of patient management based on 68Ga-HER2 Affibody PET will be determined.

NCT05283330

A Phase 1 Open-Label Dose Escalation and Expansion Study to Determine the Safety, Tolerability, Dosimetry, and Preliminary Efficacy of ²¹²Pb-DOTAM-GRPR1 in Adult Subjects With Recurrent or Metastatic GRPR-expressing Tumors

A Phase 1 SAD/MAD dose escalation and expansion study to determine the safety and effectiveness of ²¹²Pb-DOTAM-GRPR1 in subjects with various GRPR-expressing Tumors

NCT05339113

Comparison of [68Ga]GaFAPI-46 PET/CT and [18F]FDG PET/CT Findings in Breast Carcinoma

The aim of this study is to compare the diagnostic performance of 68Ga-FAPI-46 PET/CT and 18F-FDG PET/CT in primary and metastatic lesions of breast cancer and to reveal the best diagnostic imaging time of 68Ga-FAPI-46 PET/CT.

NCT05940298

SPECT Imaging of Gastrin Releasing Peptide Receptors Using Labeled Technetium-99m DB8 ([99mTc]Tc- DB8) in Prostate Cancer and Breast Cancer Patients

The study should evaluate the biological distribution of 99mTc-DB8 in patients with prostate cancer and breast cancer. The primary objective are: To assess the distribution of [99mTc]Tc- DB8 in normal tissues and tumors at different time intervals. To evaluate dosimetry of [99mTc]Tc- DB8. To study the safety and tolerability of the drug [99mTc]Tc- DB8 after a single injection in a diagnostic dosage. The secondary objective are: 1. To compare the obtained [99mTc]Tc- DB8 SPECT imaging results with the data of CT and/or MRI and/or ultrasound examination and immunohistochemical (IHC) studies in prostate cancer and breast cancer patients.

NCT03321045

PET Imaging With 89Zr-Trastuzumab for Prediction of HER2 Targeted Therapy Effectiveness

Our goal is to investigate the use of 89Zr-trastuzumab as a HER2 imaging agent to determine which patients are likely to respond to targeted HER2 agents as single agent therapy. We are proposing to perform a pilot study with goals of demonstrating the feasibility of imaging breast cancer patients with 89Zr-trastuzumab-PET/MRI, evaluating the relationship between tumor 89Zr-trastuzumab uptake and in vitro positivity of HER2, assessing the relationship between 89Zr-trastuzumab uptake and response to HER2 therapy.

NCT04281641

Gene Expression Assays and 68 Ga-Affibody HER-2 Imaging PET in Predicting Response to Treatment With Trastuzumab and Pertuzumab Before Surgery in Chinese Patients With HER2 Positive Breast Cancer

This study is to explore the markers in early prediction of the efficacy of pre-operative pertuzumab plus trastuzumab (PH) combined with chemotherapy for early stage or locally advanced human epidermal growth factor receptor-2 (HER-2) positive primary breast cancer.

NCT05376878

Pilot Study to Evaluate 64Cu-DOTA-Trastuzumab Imaging in Patients With HER2+ Breast Cancer With Brain Metastatsis Treated With Fam-Trastuzumab Deruxtecan

This clinical trial examines an investigational scan (64Cu-DOTA-trastuzumab positron emission tomography [PET]/magnetic resonance imaging [MRI]) in imaging patients with HER2+ breast cancer that has spread to the brain (brain metastasis). Diagnostic procedures, such as 64Cu-DOTA-trastuzumab PET/MRI, may help find HER2+ breast cancer that has spread to the brain and determine whether cancer in the brain takes up trastuzumab, which may predict for response to trastuzumab deruxtecan (the standard of care chemotherapy).

NCT04769050

A Phase II, Single-center, Dynamic Observational Study With PET of 68Ga-HER2-affibody in Anti-HER2 Treatment

Dynamic observationaL study with PET of 68Ga-HER2-affibody in anti-HER2 treatment

NCT04674722

Technetium-99m/Rhenium-188 Labeled Anti-HER2 Single Domain Antibody (99mTc/188Re-NM-02) for HER2 Expression Detection and Radionuclide Therapy in Breast Cancer

To evaluate the safety, dosimetry and efficacy of 99mTc/188Re labeled anti-HER2-single domain antibody (Product Code Name: 99mTc-NM-02 and 188Re-NM-02) SPECT/CT imaging of HER2 expression and radionuclide therapy in Breast Cancer. The SPECT/CT results will compare with the existing gold standard " HER2 expression detection" by biopsy tissue immunohistochemistry (IHC) and/or Fluorescence in Situ Hybridization (FISH) method, and 18F-FDG PET/CT imaging. It also to establish a new theranostic method for non-invasive HER2 expression detection and radionuclide therapy in breast cancer using 99mTc/188Re labeled anti-HER2 single domain antibody.

NCT05931302

Initial Staging of Lobular Breast Carcinoma: Head to Head Comparison of 68Ga-FAPI-46 and 18F-FDG PET/CT

Research hypothesis : Through better sensitivity (and specificity), 68Ga-FAPI-46-46 PET should provide a more accurate staging of lobular breast cancer than 18F-FDG PET. Participants with lobular breast carcinoma will then undergo 18F-FDG and 68Ga-FAPI-46 PET scan. Primary objective of the study is to compare the sensitivity of 68Ga-FAPI-46 with the sensitivity of 18F-FDG in the detection of lobular breast carcinoma lesions, measured by positron emission tomography (PET). These results will be compared with the histological data collected before or during surgery (conventional histological data and immunohistochemical labeling of FAPα on the sample obtained), clinical follow-up and any results of additional examinations carried out within the usual clinical follow-up of the patients. Comparison of primary tumor and metastases uptake of 68Ga-FAPI-46 with the uptake of 18F-FDG, radiomic study of 68Ga-FAPI-46 PET and comparative radiomic study of 68Ga-FAPI-46 PET and 18F-FDG PET and comparison of the specificity of 68Ga-FAPI-46 with the specificity of 18F-FDG after a 12-month follow-up will also be performed as secondary objectives.

NCT05226663

Imaging Using the Novel Radiotracer [18F] FluorThanaTrace([18F]FTT) by PET/CT in Patients With Breast Cancer

This phase II trial tests whether [18F]FluorThanatrace by positron emission tomography (PET)/computed tomography (CT) can improve imaging techniques in patients with breast cancer undergoing a standard of care biopsy or surgery. [18F]FluorThanatrace is a new radioactive tracer, which is a type of imaging agent that is labeled with a radioactive tag and injected into the body to help with imaging scans. PET is an established imaging technique that utilizes small amounts of radioactivity attached to very minimal amounts of tracer, in the case of this research, [18F]FluorThanatrace. Because some cancers take up [18F]FluorThanatrace it can be seen with PET. CT utilizes x-rays that traverse body from the outside. CT images provide an exact outline of organs and potential inflammatory tissue where it occurs in patient's body. [18F]FluorThanatrace by PET/CT may help detect the activity of a certain enzyme in the body that may be related to cancer growth in patients with breast cancer.

NCT03827317

HERPET: A Mechanistic Non-Invasive Imaging Study of HER2 Expression in Breast Cancer Using [18F]GE-226 Positron Emission Tomography

This mechanistic study will be the first study to assess the efficacy of [18F]GE-226 to target HER2 expression in patients with metastatic breast cancer. The study will establish the pharmacokinetics of [18F]GE-226 and the optimum time-point for performing static scans in this patient population.

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NCT04692831

Imaging of HER2-positive Cancer With Site-Specifically Labeled 89Zr-ss-Pertuzumab

The purpose of this study is to see whether 89Zr-ss-pertuzumab is safe in people with HER2+ cancer.

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NCT04573231

Evaluation of Prostate Specific Membrane Antigen (PSMA) in HER2-negative, Androgen Receptor (AR)-Positive Metastatic Breast Cancer With 18F-DCFPyL PSMA-based PET/CT

The purpose of this research is to determine the expression of prostate specific membrane antigen (PSMA) in human epidermal growth factor receptor 2 (HER2)-negative, androgen receptor (AR)-positive metastatic breast cancer, and to determine its role in resistance to the anti-androgen, bicalutamide. The investigators hypothesize that PSMA expression will correlate with resistance to anti-androgen therapies, as has been documented in prostate cancer, and this can be used to select patients most likely to benefit from these therapies in future clinical trials. 15 people with HER2-negative, AR-positive metastatic breast cancer will be enrolled and be on study for about 3 days.

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NCT03846167

Imaging of Primary or Recurrent Breast Cancer With 18F-FluorThanatrace Positron Emission Tomography (PET/CT)

Patients with known or suspected, in the opinion of an investigator, primary or metastatic breast cancer may be eligible for this study. Up to 30 evaluable patients will undergo study imaging in this protocol. The imaging procedure may include one or both of the following imaging sessions; 1) a 45- 60 minute dynamic scan, starting at approximately the same time as the injection and/or 2) a skull base to mid-thigh scan starting approximately 60 minutes post injection of [18F]FTT. The planned scanning protocol will be selected by an investigator and will be discussed with the subject prior to the imaging visit. The PET/CT scan will include an injection of [18F]FTT. Data will be collected to evaluate uptake of [18F]FTT in breast cancer and compare with PARP-1 activity in tissue, when available. If patients are getting neoadjuvant or other systemic therapy, a second optional scan may be performed 1 day to 3 weeks after therapy begins to evaluate whether response correlates with increase in PARP-1 activity.response correlates with increase in PARP-1 activity.

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NCT03863457

Pilot Study Evaluating the Uptake of [18F] F-GLN by PET/CT in Breast Cancer

Patients with known or suspected primary or metastatic breast cancer with one lesion that is 1.5 cm in diameter or greater may be eligible for this study. Patients may participate in this study if they are at least 18 years of age. Up to 40 evaluable subjects will participate in a single imaging cohort. Patients will be stratified for analysis by breast cancer subtype with prioritization to recruit at least 10 estrogen-receptor-expressing (ER+) and 10 triple-negative breast cancers (TNBC). This is an observational study; [18F]F-GLN PET/CT will not be used to direct treatment decisions. While patients and referring physicians will not be blinded to the [18F]F-GLN PET/CT results, treatment decisions are made by the treating physicians based upon clinical criteria.

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NCT06147362

68Ga-NOTA-PEG2-RM26 PET/CT: Tracer Biodistribution and Uptake in Different Kinds of Cancer With Gastrin-Releasing Peptide Receptor (GRPR) Overexpression

The gastrin-releasing peptide receptor (GRPR), also known as bombesin receptor subtype II (BB2), is a member of the G protein-coupled receptor family of bombesin receptors. GRPR is over-expressed in various types of human tumors. RM26, a GRPR antagonist with high affinity, was discovered by peptide backbone modification of bombesin analogues. To target gastrin-releasing peptide receptor in human neoplastic cells NOTA-PEG2-RM26 was synthesised and then labeled with 68Ga. An open-label whole-body PET/ CT study was designed to investigate the safety and dosimetry of 68Ga-NOTA-PEG2-RM26 and to assess its clinical diagnostic value in patients with cancer.

NCT04758780

Prospective Phase II Pilot Study, Assessing Imaging Performance of 89Zirconium-labelled Girentuximab (89Zr-TLX250) PET-CT (Positron Emission Tomography/Computerized Tomography) in Metastatic Triple Negative Breast Cancer Patients

The purpose of this study is to evaluate the use of 89Zr-labeled girentuximab (89Zr-TLX250) as a novel, carbonic anhydrase IX (CAIX) targeted PET/CT tracer for the imaging of metastatic triple negative breast cancer (TNBC) patients.

NCT06086704

Phase II Study of 18F-FFNP Breast PET/MRI in the Assessment of Early Response of Breast Cancer to Presurgical Endocrine Therapy

This clinical trial will investigate an estrogen-regulated parameter as an early measure of endocrine therapy response: progesterone receptor (PR) protein with a progestin-based radioligand, 18F-fluorofuranylnorprogesterone (18F-FFNP). The overall purpose of this research is to test the efficacy of 18F-FFNP PET/MRI for predicting response to presurgical endocrine therapy and to determine the quantitative reliability of 18F-FFNP breast PET/MRI in patients with newly diagnosed ER+/PR+/HER2- primary breast cancer.

NCT04273555

Monitoring Early Response to Targeted Therapy in Stage IV Human Epidermal Growth Factor Receptor 2 Positive (HER2+) Breast Cancer Patients With Advanced Positron Emission Tomography (PET)/Magnetic Resonance Imaging (MRI)

The purpose of the study is to see if a new group of imaging tests can help identify response to stage IV HER2+ breast cancer before treatment.

NCT04252859

[18F]Fluoroestradiol-Positron Emission Tomography (PET)/CT Imaging of Invasive Lobular Carcinoma

FES PET/CT imaging for invasive lobular cancer

NCT04727632

[18F]Fluoroestradiol-PET/CT Companion Imaging Study to the FORESEE: Functional Precision Oncology for Metastatic Breast Cancer Feasibility Trial

This protocol is a companion imaging study that will add FES-PET/CT imaging to the FORESEE trial at HCI. This study will establish the feasibility of using FES-PET/CT imaging to guide therapeutic decision making for functional precision oncology trials. The unique ability of FES-PET/CT to show absence of functional estrogen receptors throughout the entire body may improve confidence among research oncologists that an ER+ metastatic breast cancer patient is truly refractory to hormonal therapies which is a critical determination in the study design of the FORESEE trial.

NCT03212170

[18F]Fluorofuranylnorprogesterone (FFNP) PET/MR Imaging of Progesterone Receptor Expression in Invasive Breast Cancer

The goal of this research is to test the accuracy of PET/MRI imaging with 18F-fluorofuranylnorprogesterone (FFNP) for measuring progesterone receptor (PR) expression in patients with invasive breast cancer. The hypothesis is that FFNP SUVmax from PET/MRI will correlate well against the semi-quantitative PR immunohistochemistry score.

NCT05549024

68Ga-RM26-RGD PET/CT Imaging in the GRPR and αvβ3 Positive Tumor Patients

Based on the high expression of specific receptors on the surface of diseased tissues and neovascularization, noninvasive targeted molecular imaging can be used to visualize lesions in vitro by combining specific ligands labeled with short half-life isotopes. In this study, a novel dual-target imaging agent 68Ga-RM26-RGD was used for clinical study of tumor PET/CT imaging to further verify its clinical application value.

NCT05622227

68Ga-P16-093 PET/CT Imaging in Primary and Recurrent Breast Cancer Patients

PSMA is highly expressed on the cell surface of the microvasculature of several solid tumors, including breast cancer. This makes it a potentially imaging target for the detection and grading of breast cancer. This pilot study was designed to evaluate the diagnostic performance of 68Ga-P16-093, a novel radiopharmaceutical targeting PSMA, which was compared with 18F-FDG in the same group of breast cancer patients.

NCT05613270

A Prospective Pilot Study to Explore Performance and Efficacy of 18F-FES PET/CT in ER-positive Breast Cancer Patients

18F-fluoroestradiol (FES) is radioactive labeled estradiol, developed for in vivo visualization of estrogen receptor (ER) using positron emission tomography (PET). In this prospective study, 18F-FES PET/CT will be used to evaluate ER activity of metastatic disease and their potential sensitivity to endocrine therapy in ER-positive breast cancer.

NCT05619016

Phase II Study of [68Ga]Ga-ABY-025 PET for Non-invasive Quantification of HER2-status in Solid Tumors

The goal of this phase II clinical trial is to improve the selection of patients with solid tumors who would benefit from effective treatment with HER2 targeted drugs. This will be achieved by examining patients with HER2 positive tumors in the esophagus or stomach or patients with advanced breast cancer with low HER2 expression (HER2low) with the HER2 specific positron emission tomography (PET) tracer ABY-025 (HER2-PET) and compare the imaging results with HER2 expression in tumor tissue derived from biopsies (reference standard).

NCT05659797

Pilot Study Evaluating the Uptake of [18F]Fluoroestradiol (FES) BPET/DBT in Primary Breast Cancer to Measure the Localized Extent of Estrogen Receptor Positive Disease

Patients with newly diagnosed primary estrogen-receptor (ER) positive breast cancer, with at least one breast lesion that is 1.0 cm in diameter or greater, may be eligible for this study. Patients may participate in this study if they are at least 18 years of age. Up to 20 evaluable subjects will participate in a single imaging cohort. Study subjects will undergo imaging of the breast with a novel device combining dedicated Breast Positron Emission Tomography (BPET) and Digital Breast Tomosynthesis (DBT) following intravenous injection of [18F]-Fluoroestradiol (FES). This is an observational study; FES-BPET/DBT will not be used to direct treatment decisions. While patients and referring physicians will not be blinded to the FES-BPET/DBT results, treatment decisions are made by the treating physicians based upon standard clinical imaging.

NCT05710328

Interim FDG-PET/CT for PreDIcting REsponse of HER2+ Breast Cancer to Neoadjuvant Therapy: DIRECT Trial

This phase II trial tests how well an imaging procedure called fludeoxyglucose F-18 (FDG) positron emission tomography/computed tomography (PET/CT) works in predicting response to standard of care chemotherapy prior to surgery in patients with HER2-positive stage IIa-IIIc breast cancer. FDG is a radioactive tracer that is given in a vein before PET/CT imaging and helps to identify areas of active cancer. PET and CT are imaging techniques that make detailed, computerized pictures of areas inside the body. The use of FDG-PET/CT may help doctors better decide if a patient needs more or less treatment before surgery in order to get the best response. This study evaluates whether FDG-PET/CT is useful in predicting a patient's response to standard of care chemotherapy.

NCT05784597

A Phase I Study to Evaluate the Safety and Dosimetry of 68Ga-labelled OncoFAP Derivatives in Patients With Solid Tumors

Phase I, multicenter study in patients with a confirmed diagnosis of solid tumor among breast cancer, colorectal cancer, oesophageal cancer and pancreatic adenocarcinoma, requiring clinical staging for nodal staging and/or metastatic disease (based on institutional practice and risk stratification). All patients will receive a single intravenous bolus administration of 250 MBq (225 - 275 MBq). [68Ga]Ga-OncoFAP biodistribution, PK, and dosimetry of [68Ga]Ga-OncoFAP will be assessed based on a series of PET/CT scans, blood and urine sampling.

NCT05861830

An Exploratory Study on Predicting the Efficacy of Dalpiciclib in Combination With Endocrine Therapy for HR-Positive and HER2-Negative Recurrent/Metastatic Breast Cancer Patients After CDK4/6 Inhibitor Treatment Failure Using 18F-FES PET/CT

CDK4/6 inhibitors are currently the standard treatment for female breast cancer patients with HR+ tumors. However, there is no established standard treatment for patients who experience treatment failure with CDK4/6 inhibitors. The MAINTAIN study has shown clinical benefits by switching to Ribociclib and changing endocrine therapy after progression on CDK4/6 inhibitors. We hypothesize that combining Dalpiciclib with physician-selected endocrine therapy, following treatment failure with CDK4/6 inhibitors, would similarly lead to improved patient survival. In this study, 18F-FES PET/CT will be employed as a non-invasive alternative to biopsy techniques for evaluating the expression of ER in various systemic lesions of the patients.

NCT05889728

Assessment of the Diagnostic and Theranostic Potential of Ga Bombesin PET/CT (NeoB) Imaging for Staging of ER/PR + HER2- Breast Cancer Patients With Metastatic Disease: Comparison to Conventional Imaging

This phase IIb pilot study will enrol 20 patients (women) presenting with metastatic breast cancer (ER/PR + HER2- on histology) who require imaging for staging or re-staging of their disease.

NCT05730608

Improving Breast Cancer Staging With 18F-FDG PET/CT Imaging (The IMBRECAS PET Study)

Purpose To investigate the ability of 18F-FDG PET/CT imaging to detect metastases not detected by conventional imaging (CT and bone scintigraphy) in patients diagnosed with stage II/III and locoregional recurrent breast cancer (BC) which can affect the choice of treatment. Hypothesis The hypothesis is that 18F-FDG PET/CT can provide information about disease stage beyond the currently used conventional imaging (CT and bone scintigraphy) in patients diagnosed with stage II/III or locoregional recurrent BC. Objectives

NCT03655353

A Multicenter Phase II/III-study of 68Ga-ABY-025 PET for Non-invasive Quantification of HER2-expression in Advanced Breast Cancer

A large multi- center phase II/III study with 68Ga-ABY-025 PET and biopsies in patients with advanced HER2-positive breast cancer, where the primary endpoint of the study is to find out the correlation between the HER2 expression measured by 68Ga-ABY-025 PET and standard histopathology from relevant tumor biopsies.

NCT02386709

Study Evaluating the Utility of 18F-FDG PET in Assessing Early Response to Neoadjuvant Treatment in Patients With Mammary Gland Cancer

Neoadjuvant chemotherapy is frequently proposed to patients with mammary gland cancer. The aim is to reduce tumor volume before surgical therapy. Obtaining a pathologic Complete Response (pCR) is regarded as a good prognostic factor with less risk of recurrence. The rate of pCR is about 20%, although there are important variations according to tumor subtype and the type of treatment. The objective of the new therapeutic strategies is to increase this response rate. The purpose of this study is to investigate the possibility of early evaluation of neoadjuvant chemotherapy response after one cycle of neoadjuvant chemotherapy by positron emission tomography (PET) with (18) F-fluorodeoxyglucose (FDG) in patients.

NCT05574920

A Prospective Pilot Study to Explore Performance and Efficacy of Al18F-NOTA-FAPI-04 PET/CT in Breast Cancer Patients

Fibroblast activation protein (FAP) is overexpressed in cancer-associated fibroblasts (CAFs), which constitute a major proportion of cells within the tumor microenvironment, especially in breast cancer. Previous studies have demonstrated that FAPI PET/CT performs well in cases of epithelial tumors, including breast cancer. This prospective study is going to investigate the performance and value of Al18F-NOTA-FAPI-04 PET/CT in patients with breast cancer.

NCT05574907

A Prospective Pilot Study to Explore Performance and Efficacy of 68Ga-FAPI PET/CT in Breast Cancer Patients.

Fibroblast activation protein (FAP) is overexpressed in cancer-associated fibroblasts (CAFs), which constitute a major proportion of cells within the tumor microenvironment, especially in breast cancer. 68Ga-FAPI has been developed as a tumor-targeting agent. This prospective study is going to investigate the performance and value of 68Ga- FAPI PET/CT in patients with breast cancer.

NCT04316117

FDG PET to Assess Therapeutic Response in Patients With Bone-Dominant Metastatic Breast Cancer, FEATURE

This phase II trial studies how well FDG-PET/CT works in assessing the response of patients with breast cancer that has spread to the bones or mostly to the bones (bone-dominant metastatic breast cancer). Diagnostic procedures, such as FDG-PET/CT, may work better in measuring breast cancer activity before and after treatment compared to other standard imaging tests.

NCT05797987

Negative Estrogen Receptor (ER) Expression Assessed by 18F-fluoroestradiol Positron Emission Tomography/Computed Tomography (18F-FES PET/CT) in the Metastatic Breast Cancer (MBC) With ER-positive Primary Tumor

To investigate the treatment pattern and efficacy of patients with positive primary ER lesion but negative ER expression in MBC using a novel convenient way of 18F-fluoroestradiol positron emission tomography/computed tomography (18F-FES PET/CT).

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NCT04090398

Phase II Trial of Radium-223 Dichloride in Combination With Paclitaxel in Patients With Bone Metastatic Breast Cancer

This phase II trial studies how well radium-223 dichloride and paclitaxel work in treating patients with advanced breast cancer that has spread to the bones. Radium-223 dichloride is a radioactive drug that behaves in a similar way to calcium and collects in cancer that has spread to the bones (bone metastases). The radioactive particles in radium-223 dichloride act on bone metastases, killing the tumor cells and reducing the pain that they can cause. Drugs used in chemotherapy, such as paclitaxel, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving radium-223 dichloride and paclitaxel may work better in treating patients with metastatic breast cancer compared to paclitaxel alone.

NCT06145399

[18F]-Fluoro-2-Deoxy-D-Glucose and -[18F] Dihydro-Testosterone PET Imaging In Patients Advanced Breast Cancer

The purpose of this study is to see whether 18F-FDHT PET/MRI scans are an effective way of identifying AR-positive breast cancer.