Evaluation of PET 18F-Fludarabine for the Initial Assessment and End-treatment of Symptomatic Multiple Myeloma Patients

Phase 1

Recruiting

• Conditions: Myeloma
• Interventions: Drug: 18F-Fludarabine

• Registration Number: NCT03832127
• Lead Sponsor: Nantes University Hospital

Brief Summary

The objective of this exploratory study is to evaluate, for the first time, the sensitivity of 18F-Fludarabine to the initial diagnosis of MM compared to FDG-PET and MRI. The interest of this molecule will also be investigated as part of the end-of-treatment therapeutic evaluation.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2018-07-20
• Study First Submitted QC: 2019-02-04
• Study First Posted: 2019-02-06
• Study Start: 2022-09-09
• Status Verified: 2024-06
• Last Update Submitted: 2024-06-12
• Last Update Posted: 2024-06-14
• Primary Completion: 2024-09-09
• Study Completion: 2026-09-09

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 35

Inclusion Criteria

• Symptomatic MM in the first line in patients who are not candidates for autologous bone marrow transplantation.
• Patients eligible for one of the treatments considered as standard in a patient who is not eligible for autograft, according to ESMO's European recommendations
• MM with measurable disease either by the serum evaluation of the monoclonal component or by the determination of free light chains (serum or urinary).
• Patient affiliated with a social insurance scheme
• The patient must understand and voluntarily sign the informed consent form
• Women of childbearing potential must have a serum pregnancy test (performed within 2 days before each PET scan.)
• Women of childbearing potential must use an effective contraceptive method throughout the course of the study and for 30 days after the last PET.
• Male patients (vasectomised or not) with a pregnant partner or a partner of childbearing potential must use a condom and a spermicide until 90 days after the last PET.
• HIV serology known to be negative
• Karnofsky ≥ 70 or ECOG 0-1

Exclusion Criteria

• Age under 18 years
• Pregnancy or breastfeeding
• Male or female refusing birth control conditions
• Primary AL amyloidosis and myeloma complicated by amyloidosis
• Neutropenia <1000 PN / mm3
• Thrombocytopenia <70,000 / mm3
• Hepatic impairment: bilirubin> 35μmol / L and SGOT, SGPT, alkaline phosphatase greater than 3 N
• Renal impairment defined by creatinine clearance <50 ml / min
• History of other malignancies with the exception of basal cell carcinoma and stage I cervical cancer
• Severe active infection
• Active infection with known hepatitis B or C virus.
• Patient with insulin-dependent or non-insulin-dependent diabetes mellitus.
• Intolerance or known allergy to any of the study drugs or any of its analogues
• Psychiatric illness that may interfere with participation in the study
• Patient under safeguard of justice
• Intellectual inability to sign informed consent
• Persons protected by law

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Fludatep	18F-Fludarabine	PET with 18F-Fludarabine

Primary Outcome Measures

Name	Time	Method
Detection of sensitivity of the lesions (osseous and extra-osseous) of 18Fludarabine PET (FludaTEP)	Before treatment	The sensitivity of the initial FludaTEP will be evaluated using an optimal reading mode lesion analysis (ie by consensus of experts) by defining : True positive: * positive lesion with 18F-Fludarabine and positive with PET-FDG or MRI; * or positive lesion with 18-F-Fludarabine, negative with PET-FDG and MRI, but confirmed by further complementary imaging (CT) or histological examination, or confirmed at follow-up; False negative: -negative lesion with 18F-Fludarabine and positive FDG-PET and / or MR Lesions positivity in PET-FDG and MRI will be assessed by central reading done by consensus of experts. Lesions positivity with 18F-Fludarabine will be defined by central reading assessed by 2 nuclear physicians experts in hematology with no access to the other exams' results.

Secondary Outcome Measures

Name	Time	Method
To evaluate the sensitivity, specificity, and positive and negative predictive values of the FludaTEP for the initial balance according to the local reading	Before treatment	The specificity, positive predictive value (PPV) and negative predictive value (NPV) of the FludaTEP for the initial balance will be evaluated through lesion analysis based on the local reading investigator center reading using definitions of VP, VN, FP, and FN described above.
To evaluate the prognostic impact of FludaTEP on the initial assessment and for the end-of-treatment therapeutic evaluation	Before and After treatment	The prognostic impact of FludaTEP on the initial assessment and for the end-of-treatment therapeutic evaluation will be determined by evaluating the impact of a decrease and a negation of the signal in imaging on an increase in progression-free survival and overall survival.
To evaluate the specificity and the positive and negative predictive values of the FludaTEP for the initial assessment through an optimal reading mode.	Before treatment	The specificity, positive predictive value (PPV) and negative predictive value (NPV) of the FludaTEP for the initial assessment will be assessed through an optimal reading mode lesion analysis (ie by consensus of experts) using same true positive and false positive définitions as for the main endpoint and defining: -positive lesion with 18F-Fludarabine but not found or confirmed on an histological examination, or other imaging technique (PET-FDG, MRI +/- Scan) or at follow-up; True negative: -negative lesion with 18F-Fludarabine and negative with FDG-PET and MRI
To evaluate the prognostic impact of FDG-PET and FludaTEP on the number of lesions detected by each imaging technique in a population of MM patients in the 1st line therapeutic but not candidates for marrow autograft.	After treatment	The prognostic impact of FDG-PET and FludaTEP as a function of the number of lesions detected by each imaging technique will be evaluated by evaluating the impact of these data on progression-free survival and overall survival. Progression-free survival is defined as the time between the beginning of treatment of the disease and relapse or progression. Overall survival is defined as the time between the start of treatment and death.
Evaluate in a population of MM patients the existence of a correlation between the 18Fludarabine and FDG uptake intensities and the cytogenetic data Tolerance to 18F-Fludarabine	Before and After treatment	Tolerance to 18F-Fludarabine will be evaluated by clinical monitoring during 2 hours following the 18F-Fludarabine injection. Clinical data will be taken prior to the 18F-Fludarabine injection, prior to the data capture at 60min and after the last data capture.
Evaluate in a population of MM patients the existence of a correlation between the 18Fludarabine and FDG uptake intensities	Before and After treatment	Correlations between the 18Fludarabine and FDG uptake intensities assessed by SUVs and the quantitative expression of markers measured in flow cytometry and cytogenetic data (in particular the expression of the coding gene for hexokinases) will be measured using Spearman's correlation coefficient.

Trial Locations

Locations (7)

CHU de Brest; 🇫🇷 Brest, France

CHU de Caen; 🇫🇷 Caen, France

CHU d'Angers; 🇫🇷 Angers, France

Centre Eugène Marquis; 🇫🇷 Rennes, France

CHU de Nantes; 🇫🇷 Nantes, France

CHU de Rennes; 🇫🇷 Rennes, France

CHU de Tours; 🇫🇷 Tours, France