Completed

A Multiple-Dose Targeting Study of hu3S193 in Patients With Small Cell Lung Cancer

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What is being tested

monoclonal antibody hu3S193

Biological
Who is being recruted

Bronchial Neoplasms
+7

+ Carcinoma, Bronchogenic
+ Lung Diseases
Over 18 Years
See all eligibility criteria
How is the trial designed

Treatment Study

Phase 1
Interventional
Study Start: July 2004
See protocol details

Summary

Principal SponsorLudwig Institute for Cancer Research
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner
Study start date: July 26, 2004Actual date on which the first participant was enrolled.

OBJECTIVES: Primary * Determine the targeting, tissue distribution, and pharmacokinetics of monoclonal antibody hu3S193 in patients with progressive small cell lung cancer (SCLC). Secondary * Determine the immunogenicity of of monoclonal antibody hu3S193 in patients with progressive small cell lung cancer (SCLC). * Determine tumor response of monoclonal antibody hu3S193 in patients with progressive small cell lung cancer (SCLC). * Determine the safety of tof monoclonal antibody hu3S193 in patients with progressive small cell lung cancer (SCLC). OUTLINE: This is an open-label, pilot study. Patients received monoclonal antibody hu3S193 (mAb hu3S193) intravenously (IV) over 30 minutes on day 1 of weeks 1-4. Patients also received indium-111 (111In) radiolabeled hu3S193 IV over 30 minutes on day 1 of weeks 1 and 4 and then underwent gamma camera imaging. Treatment continued in the absence of disease progression or unacceptable toxicity. Patients were followed at 1 and 4 weeks, every 3 months for 1 year, and then every 6-12 months thereafter.

Official TitleA Multiple-Dose Targeting Study of hu3S193 in Patients With Small Cell Lung Cancer 
NCT00084799
Principal SponsorLudwig Institute for Cancer Research
Last updated: January 14, 2026
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
10 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Treatment Study
These studies test new ways to treat a disease, condition, or health issue. The goal is to see if a new drug, therapy, or approach works better or has fewer side effects than existing options.

How participants are assigned to different groups/arms
In this clinical study, participants are assigned to groups based on specific criteria, such as their medical history or a doctor's recommendation. This approach ensures that treatments are given to those who may benefit the most, based on known factors.

Other Ways to Assign Participants
Randomized allocation: Participants are assigned randomly, like flipping a coin, to ensure fairness and reduce bias.
None (Single-arm trial): If the study has only one group, all participants receive the same treatment, and no allocation is needed.

How treatments are given to participants
Participants are divided into different groups, each receiving a specific treatment at the same time. This helps researchers compare how well different treatments work against each other.

Other Ways to Assign Treatments
Single-group assignment: Everyone gets the same treatment.
Cross-over assignment: Participants switch between treatments during the study.
Factorial assignment: Participants receive different combinations of treatments.
Sequential assignment: Participants receive treatments one after another in a specific order, possibly based on individual responses.
Other assignment: Treatment assignment does not follow a standard or predefined design.

How the effectiveness of the treatment is controlled
In a non placebo-controlled study, no participants receive an inert substance (placebo) to compare outcomes. Instead, all participants receive either the experimental treatment or an alternative treatment (often the Standard of Care). This method allows researchers to compare the effects of the experimental treatment with those of a different active intervention, rather than a placebo.

Other Options
Placebo-Controlled: A placebo is used to compare the effects of the experimental treatment with those of an inert substance, isolating the true treatment effect.

How the interventions assigned to participants is kept confidential
Everyone involved in the study knows which treatment is being given. This is typically used when it's not possible or necessary to hide the treatment details from participants or researchers.

Other Ways to Mask Information
Single-blind: Participants do not know which treatment they are receiving, but researchers do.
Double-blind: Neither participants nor researchers know which treatment is given.
Triple-blind: Participants, researchers, and outcome assessors do not know which treatment is given.
Quadruple-blind: Participants, researchers, outcome assessors, and care providers all do not know which treatment is given.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
Over 18 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Bronchial Neoplasms
Carcinoma, Bronchogenic
Lung Diseases
Lung Neoplasms
Neoplasms
Neoplasms by Site
Respiratory Tract Diseases
Respiratory Tract Neoplasms
Thoracic Neoplasms
Small Cell Lung Carcinoma
Criteria

Inclusion Criteria: Small cell lung cancer, pathologically confirmed. Measurable disease, including at least one lesion measuring ≥ 2 cm that has not been previously irradiated. Progression of disease after one, two, or three prior chemotherapy regimens. At least 4 weeks since the last chemotherapy or radiation treatment. Karnofsky performance status ≥ 70% (ECOG 0 or 1). The following laboratory results within the last 2 weeks prior to study day 1: White Blood Cell Count (WBC) ≥ 3,500/mm3; Platelet count ≥ 100 x 10\^9/L; Serum creatinine ≤ 2.0 mg/dL; Serum bilirubin ≤ 2.0 mg/dL; International normalized ratio (INR) ≤ 1.3; Women of childbearing potential with confirmed negative quantitative serum HCG on the day of administration of study agent. Negative stool guaiac test (read by laboratory). Tumor tissue positive for Lewis Y expression. Exclusion Criteria: Clinically significant cardiac disease (New York Heart Association Class III/IV). Uncontrolled brain or leptomeningeal metastases. GI bleed within the preceding 6 months. Patients with history of receiving mouse monoclonal antibody. Participation in any other clinical trial involving another investigational agent within 4 weeks prior to enrollment. Women who are pregnant or breast-feeding.

Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives
2 intervention groups 

are designated in this study

This study does not include a placebo group 

Treatment Groups
Group I
Experimental
Patients with small cell lung cancer tumors confirmed to have Lewis Y expression were enrolled to receive 4 weekly injections of hu3S193 at a dose of 10 mg/m2. The dose of hu3S193 given on Weeks 1 and 4 was trace-labeled with 6-8 millicurie (mCi) of indium-111 (111In).

Group II
Experimental
Patients with small cell lung cancer tumors confirmed to have Lewis Y expression were enrolled to receive 4 weekly injections of hu3S193 at a dose of 20 mg/m2. The dose of hu3S193 given on Weeks 1 and 4 was trace-labeled with 6-8 millicurie (mCi) of indium-111 (111In).

Study Objectives
Primary Objectives

Gamma camera imaging, including planar scans and single-photon emission computed tomography (SPECT) scans, were carried out immediately following completion of infusion and on two subsequent occasions during the next 6 days after the infusions of 111In-hu3S193 on weeks 1 and 4. A pretreatment FDG-positron emission tomography PET/CT scan was performed within 2 weeks of study entry per standard clinical methods for comparison with gamma camera imaging. FDG-PET/ CT scans and 111In planar and SPECT scans were evaluated for extent of disease and antibody targeting, respectively. Lesions on FDG-PET/CT scans were considered positive if uptake of radiotracer was visually greater than surrounding tissue, with a standard uptake value greater than 3.
Secondary Objectives

Blood samples for analysis of radioactivity and serum concentration of hu3S193 were obtained immediately before and 5, 60, and 120 minutes post-infusion, before and after imaging on day 2, and on days 3 and 5 after completion of the 111In-hu3S193 infusion in weeks 1 and 4. Pharmacokinetics was calculated using WinNonLin (Pharsight Co., Mountain View, CA). A two-compartment model was fitted to individually labeled infusions for each patient using unweighted nonlinear least squares to calculate pharmacokinetic parameters.

Blood samples for analysis of radioactivity and serum concentration of hu3S193 were obtained immediately before and 5, 60, and 120 minutes post-infusion, before and after imaging on day 2, and on days 3 and 5 after completion of the 111In-hu3S193 infusion in weeks 1 and 4. Pharmacokinetics was calculated using WinNonLin (Pharsight Co., Mountain View, CA). A two-compartment model was fitted to individually labeled infusions for each patient using unweighted nonlinear least squares to calculate pharmacokinetic parameters.

Blood samples for analysis of radioactivity and serum concentration of hu3S193 were obtained immediately before and 5, 60, and 120 minutes post-infusion, before and after imaging on day 2, and on days 3 and 5 after completion of the 111In-hu3S193 infusion in weeks 1 and 4. Pharmacokinetics was calculated using WinNonLin (Pharsight Co., Mountain View, CA). A two-compartment model was fitted to individually labeled infusions for each patient using unweighted nonlinear least squares to calculate pharmacokinetic parameters.

Blood samples for analysis of radioactivity and serum concentration of hu3S193 were obtained immediately before and 5, 60, and 120 minutes post-infusion, before and after imaging on day 2, and on days 3 and 5 after completion of the 111In-hu3S193 infusion in weeks 1 and 4. Pharmacokinetics was calculated using WinNonLin (Pharsight Co., Mountain View, CA). A two-compartment model was fitted to individually labeled infusions for each patient using unweighted nonlinear least squares to calculate pharmacokinetic parameters.

Blood samples to measure human anti-human antibody (HAHA) assessments were obtained at baseline and each week before hu3S193 dosing. Measurement of immune responses to hu3S193 in patient blood samples was analyzed using a BIACORE (Piscataway, NJ) instrument using surface plasmon resonance (SPR).

Tumor response was assessed according to the Response Evaluation Criteria in Solid Tumors (RECIST). Per RECIST, target lesions are categorized as follows: complete response (CR): disappearance of all target lesions (no evaluable disease); partial response (PR): ≥ 30% decrease in the sum of the longest diameter of target lesions; progressive disease (PD): ≥ 20% increase in the sum of the longest diameter of target lesions; stable disease (SD): small changes that do not meet above criteria (Therasse P et al. 2000).

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 1 location
Suspended
Memorial Sloan-Kettering Cancer CenterNew York, United StatesSee the location
CompletedOne Study Center
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