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Lorvotuzumab Mertansine in Treating Younger Patients With Relapsed or Refractory Wilms Tumor, Rhabdomyosarcoma, Neuroblastoma, Pleuropulmonary Blastoma, Malignant Peripheral Nerve Sheath Tumor, or Synovial Sarcoma

A Phase 2 Study of IMGN901 (Lorvotuzumab Mertansine; NSC#: 783609) in Children With Relapsed or Refractory Wilms Tumor, Rhabdomyosarcoma, Neuroblastoma, Pleuropulmonary Blastoma, Malignant Peripheral Nerve Sheath Tumor (MPNST) and Synovial Sarcoma

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02452554
Enrollment
62
Registered
2015-05-22
Start date
2015-10-12
Completion date
2021-09-30
Last updated
2022-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pleuropulmonary Blastoma, Recurrent Malignant Peripheral Nerve Sheath Tumor, Recurrent Neuroblastoma, Recurrent Rhabdomyosarcoma, Recurrent Synovial Sarcoma, Wilms Tumor

Brief summary

This phase II trial studies how well lorvotuzumab mertansine works in treating younger patients with Wilms tumor, rhabdomyosarcoma, neuroblastoma, pleuropulmonary blastoma, malignant peripheral nerve sheath tumor (MPNST), or synovial sarcoma that has returned or that does not respond to treatment. Antibody-drug conjugates, such as lorvotuzumab mertansine, are created by attaching an antibody (protein used by the body?s immune system to fight foreign or diseased cells) to an anti-cancer drug. The antibody is used to recognize tumor cells so the anti-cancer drug can kill them.

Detailed description

PRIMARY OBJECTIVES: I. To assess the efficacy of IMGN901 (lorvotuzumab mertansine) in Wilms tumor, rhabdomyosarcoma, neuroblastoma and other cluster of differentiation (CD)56-expressing tumors such as pleuropulmonary blastoma, malignant peripheral nerve sheath tumor (MPNST) and synovial sarcoma. II. To determine the tolerability of the adult recommended phase 2 dose (RP2D) of IMGN901 administered as an intravenous infusion, administered on days 1 and 8 of a 21-day cycle, to children with refractory Wilms tumor, rhabdomyosarcoma, neuroblastoma, pleuropulmonary blastoma, MPNST, or synovial sarcoma. III. To define and describe the toxicities of IMGN901 administered on this schedule. EXPLORATORY OBJECTIVES: I. To correlate tumor response with tumor CD56+ expression. II. To characterize the pharmacokinetics of IMGN901 in children with refractory cancer, including an assessment of impact on circulating CD56+ peripheral blood cells. OUTLINE: Patients receive lorvotuzumab mertansine intravenously (IV) over 1-1.5 hours on days 1 and 8. Treatment repeats every 21 days for up to 17 courses in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up for 5 years.

Interventions

OTHERLaboratory Biomarker Analysis

Correlative studies

BIOLOGICALLorvotuzumab Mertansine

Given IV

OTHERPharmacological Study

Correlative studies

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Children's Oncology Group
Lead SponsorNETWORK

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
12 Months to 30 Years
Healthy volunteers
No

Inclusion criteria

* Patients must have had histologic verification of one of the malignancies listed below at original diagnosis or at relapse * Primary strata * Wilms tumor * Rhabdomyosarcoma * Neuroblastoma * Secondary strata: miscellaneous CD56-expressing tumors: * Pleuropulmonary blastoma * Malignant peripheral nerve sheath tumor (MPNST) * Synovial sarcoma * Patients must have radiographically measurable disease (with the exception of those with neuroblastoma) * Measurable disease is defined as the presence of at least one lesion on magnetic resonance imaging (MRI) or computed tomography (CT) scan that can be accurately measured with the longest diameter a minimum of 10 mm in at least one dimension (CT scan slice thickness no greater than 5 mm) * Note: the following do not qualify as measurable disease: * Malignant fluid collections (e.g., ascites, pleural effusions) * Bone marrow infiltration except that detected by metaiodobenzylguanidine (MIBG) scan for neuroblastoma * Lesions only detected by nuclear medicine studies (e.g., bone, gallium or positron emission tomography \[PET\] scans) except as noted in patients with neuroblastoma who do not have measurable disease but have MIBG-avid evaluable disease * Elevated tumor markers in plasma or cerebrospinal fluid (CSF) * Previously radiated lesions that have not demonstrated clear progression post radiation * Leptomeningeal lesions that do not meet the measurements noted above * Patients with neuroblastoma who do not have measurable disease but have MIBG-avid evaluable disease are eligible * Patients must have a Lansky or Karnofsky performance status score of \>= 50, corresponding to Eastern Cooperative Oncology Group (ECOG) categories 0, 1 or 2; use Karnofsky for patients \> 16 years of age and Lansky for patients =\< 16 years of age; patients who are unable to walk because of paralysis, but who are up in a wheelchair, will be considered ambulatory for the purpose of assessing the performance score * Patients must have fully recovered from the acute toxic effects of all prior chemotherapy, immunotherapy, or radiotherapy prior to entering this study * Patients must have received standard treatment appropriate for their tumor type * Myelosuppressive chemotherapy: patients with solid tumors must not have received myelosuppressive chemotherapy within 3 weeks of enrollment onto this study (6 weeks if prior nitrosourea) * Hematopoietic growth factors: at least 14 days must have elapsed after receiving pegfilgrastim and least 7 days must have elapsed since the completion of therapy with a non-pegylated growth factor * Biologic (anti-neoplastic agent): at least 7 days must have elapsed since completion of therapy with a biologic agent; for agents that have known adverse events occurring beyond 7 days after administration, this period prior to enrollment must be extended beyond the time during which adverse events are known to occur * Monoclonal antibodies: at least 3 half-lives must have elapsed since prior therapy that included a monoclonal antibody * Radiotherapy: \>= 2 weeks must have elapsed since local palliative external beam radiation therapy (XRT) (small port); \>= 6 weeks must have elapsed since treatment with therapeutic doses of MIBG; \>= 3 months must have elapsed if prior craniospinal XRT was received, if \>= 50% of the pelvis was irradiated, or if total body irradiation (TBI) was received; \>= 6 weeks must have elapsed if other substantial bone marrow irradiation was given * Stem cell transplant or rescue without TBI: no evidence of active graft vs. host disease and \>= 2 months must have elapsed since transplant * For patients with solid tumors without bone marrow involvement: peripheral absolute neutrophil count (ANC) \>= 1000/uL * For patients with solid tumors without bone marrow involvement: platelet count \>= 100,000/uL (transfusion independent, defined as not receiving platelet transfusions within a 7 day period prior to enrollment) * For patients with solid tumors and known bone marrow metastatic disease: peripheral absolute neutrophil count (ANC) \>= 750/uL * For patients with solid tumors and known bone marrow metastatic disease: platelet count \>= 75,000/uL (transfusion independent, defined as not receiving platelet transfusions for at least 7 days prior to enrollment) * Creatinine clearance or radioisotope glomerular filtration rate (GFR) \>= 70 mL/min/1.73 m\^2 or a serum creatinine based on age/gender as follows: * Age 1 to \< 2 years: maximum serum creatinine: 0.6 mg/dL in males and females * Age 2 to \< 6 years: maximum serum creatinine: 0.8 mg/dL in males and females * Age 6 to \< 10 years: maximum serum creatinine: 1 mg/dL in males and females * Age 10 to \< 13 years: maximum serum creatinine: 1.2 mg/dL in males and females * Age 13 to \< 16 years: maximum serum creatinine: 1.5 mg/dL in males and 1.4 mg/dL in females * Age \>= 16 years: maximum serum creatinine: 1.7 mg/dL in males and 1.4 mg/dL in females * Total bilirubin =\< 1.5 x upper limit of normal (ULN) for age * Serum glutamate pyruvate transaminase (SGPT) (alanine aminotransferase \[ALT\]) =\< 110 U/L (for the purpose of this study, the ULN for SGPT is 45 U/L) * Serum albumin \>= 2 g/dL * Shortening fraction of \>= 27% by echocardiogram, or ejection fraction of \>= 50% by gated radionuclide study * Patients with seizure disorder may be enrolled if on anticonvulsants and well controlled * All patients and/or their parents or legal guardians must sign a written informed consent * All institutional, Food and Drug Administration (FDA), and National Cancer Institute (NCI) requirements for human studies must be met

Exclusion criteria

* Patients who are pregnant or breast-feeding are not eligible for this study; negative pregnancy tests must be obtained in girls who are post-menarchal; males or females of reproductive potential may not participate unless they have agreed to use an effective contraceptive method for the duration of study therapy and for 4 weeks after the last dose of study therapy; breastfeeding women are excluded * Concomitant medications * Corticosteroids: patients requiring corticosteroids who have not been on a stable or decreasing dose of corticosteroid for the 7 days prior to enrollment are not eligible * Patients who have received previous treatment with IMGN901 are not eligible * Investigational drugs: patients who are currently receiving another investigational drug are not eligible * Anti-cancer agents: patients who are currently receiving other anti-cancer agents are not eligible * Anti-graft-versus-host disease (GVHD) or agents to prevent organ rejection post-transplant: patients who are receiving cyclosporine, tacrolimus or other agents to prevent either graft-versus-host disease post bone marrow transplant or organ rejection post-transplant are not eligible for this trial * Patients who have a CNS toxicity \> grade 2 are not eligible * Patients must not have known active central nervous system (CNS) metastases; patients with known central nervous system metastases are excluded unless treated surgically or with radiotherapy, and stable with no recurrent lesions for at least 6 months * Patients who have baseline peripheral neuropathy \>= grade 2 are not eligible * Patients who have an uncontrolled infection are not eligible * Patients who in the opinion of the investigator may not be able to comply with the safety monitoring requirements of the study are not eligible

Design outcomes

Primary

MeasureTime frameDescription
Objective Response by Response Evaluation Criteria in Solid Tumors Version 1.1Up to 18 weeks (6 courses)The best response of disease will be examined separately in each stratum. A responder is defined as a patient who achieves a best response of partial response or complete response on the study. Response rates will be calculated as the percent of evaluable patients who are responders, and Clopper-Pearson confidence intervals will be constructed.
Incidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Up to 12 months (17 courses)Toxicity tables will be constructed to summarize the observed incidence by type of toxicity and grade for toxicities with Possible, Probable, or Definite attribution to the study drug. Tables will summarize incidence by cycle.

Other

MeasureTime frameDescription
Pharmacokinetic (PK) Parameters of Lorvotuzumab MertansinePre-treatment, end of infusion, and 2, 6, 24, 48, and 96 hours after end of infusion on day 1 of course 1, and pre-treatment, end of infusion, and 2 and 6 hours after end of infusion on day 8 of course 1A descriptive analysis of PK parameters of lorvotuzumab mertansine will be performed to define systemic exposure, drug clearance, and other pharmacokinetic parameters. The PK parameters will be summarized with simple summary statistics, including means, medians, ranges, and standard deviations (if numbers and distribution permit). Analyses will be descriptive and exploratory and hypotheses generating in nature.
CD56 ExpressionDay 1 and 8 of course 1 prior to lorvotuzumab mertansineThe association between CD56+ expression and response will be evaluated using the exact conditional test of proportions (Fisher?s Exact test). Analyses will be descriptive and exploratory and hypotheses generating in nature.

Countries

United States

Participant flow

Recruitment details

Each of 6 disease strata enrolled up to 16 patients who were evaluable for the primary response criteria.

Participants by arm

ArmCount
Stratum 1: Wims Tumor
ADVL1522 Dose Level 1: IMGN901 110 mg/m2/IV over 1-1.5 hours on Days 1 and 8 every 21 days, repeatable up to 17 cycles
17
Stratum 2: Rhabdomyosarcoma
ADVL1522 Dose Level 1: IMGN901 110 mg/m2/IV over 1-1.5 hours on Days 1 and 8 every 21 days, repeatable up to 17 cycles
17
Stratum 3: Neuroblastoma
ADVL1522 Dose Level 1: IMGN901 110 mg/m2/IV over 1-1.5 hours on Days 1 and 8 every 21 days, repeatable up to 17 cycles
12
Stratum 4: Pleuropulmonary Blastoma
ADVL1522 Dose Level 1: IMGN901 110 mg/m2/IV over 1-1.5 hours on Days 1 and 8 every 21 days, repeatable up to 17 cycles
1
Stratum 5: Malignant Peripheral Nerve Sheath Tumor
ADVL1522 Dose Level 1: IMGN901 110 mg/m2/IV over 1-1.5 hours on Days 1 and 8 every 21 days, repeatable up to 17 cycles
5
Stratum 6: Synovial Sarcoma
ADVL1522 Dose Level 1: IMGN901 110 mg/m2/IV over 1-1.5 hours on Days 1 and 8 every 21 days, repeatable up to 17 cycles
10
Total62

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyDeath210000
Overall StudyIneligible010000
Overall StudyLack of Efficacy13149158
Overall StudyNever Received Treatment100000
Overall StudyPhysician Decision010000
Overall StudyWithdrawal by Subject102001

Baseline characteristics

CharacteristicStratum 2: RhabdomyosarcomaStratum 3: NeuroblastomaStratum 4: Pleuropulmonary BlastomaStratum 5: Malignant Peripheral Nerve Sheath TumorStratum 6: Synovial SarcomaStratum 1: Wims TumorTotal
Age, Categorical
<=18 years
7 Participants12 Participants1 Participants5 Participants6 Participants13 Participants44 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
10 Participants0 Participants0 Participants0 Participants4 Participants4 Participants18 Participants
Age, Continuous18.43 Years
STANDARD_DEVIATION 5.28
7.78 Years
STANDARD_DEVIATION 1.94
3.69 Years12.96 Years
STANDARD_DEVIATION 4.29
17.37 Years
STANDARD_DEVIATION 4.59
12.61 Years
STANDARD_DEVIATION 6.48
13.2 Years
STANDARD_DEVIATION 6.37
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants1 Participants0 Participants1 Participants1 Participants2 Participants8 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
14 Participants10 Participants1 Participants4 Participants9 Participants13 Participants51 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants0 Participants0 Participants2 Participants3 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants2 Participants
Race (NIH/OMB)
Black or African American
3 Participants1 Participants0 Participants1 Participants2 Participants2 Participants9 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants1 Participants0 Participants0 Participants3 Participants4 Participants8 Participants
Race (NIH/OMB)
White
14 Participants10 Participants1 Participants3 Participants5 Participants10 Participants43 Participants
Sex: Female, Male
Female
8 Participants3 Participants1 Participants4 Participants6 Participants5 Participants27 Participants
Sex: Female, Male
Male
9 Participants9 Participants0 Participants1 Participants4 Participants12 Participants35 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
10 / 1711 / 164 / 121 / 11 / 52 / 10
other
Total, other adverse events
5 / 164 / 164 / 121 / 11 / 54 / 10
serious
Total, serious adverse events
7 / 168 / 161 / 120 / 10 / 53 / 10

Outcome results

Primary

Incidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0

Toxicity tables will be constructed to summarize the observed incidence by type of toxicity and grade for toxicities with Possible, Probable, or Definite attribution to the study drug. Tables will summarize incidence by cycle.

Time frame: Up to 12 months (17 courses)

Population: 203 treatment-cycles were reported for the analysis. 2 participants were excluded from analysis;1 participant never received treatment and 1 participant was ineligible, also never receiving treatment.

ArmMeasureGroupValue (NUMBER)
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Anemia: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Anemia: Grade 32 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Anemia: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Anemia: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic fistula: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic fistula: Grade 30 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic fistula: Grade 41 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic fistula: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic perforation: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic perforation: Grade 30 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic perforation: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Colonic perforation: Grade 51 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Dental caries: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Dental caries: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Dental caries: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Dental caries: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Nausea: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Nausea: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Nausea: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Nausea: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Vomiting: Grade 21 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Vomiting: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Vomiting: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Vomiting: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Tooth infection: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Tooth infection: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Tooth infection: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Tooth infection: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Alanine aminotransferase increased: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Alanine aminotransferase increased: Grade 33 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Alanine aminotransferase increased: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Alanine aminotransferase increased: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Aspartate aminotransferase increased: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Aspartate aminotransferase increased: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Aspartate aminotransferase increased: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Aspartate aminotransferase increased: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Lymphocyte count decreased: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Lymphocyte count decreased: Grade 32 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Lymphocyte count decreased: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Lymphocyte count decreased: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperglycemia: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperglycemia: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperglycemia: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperglycemia: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperuricemia: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperuricemia: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperuricemia: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hyperuricemia: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypokalemia: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypokalemia: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypokalemia: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypokalemia: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypophosphatemia: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypophosphatemia: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypophosphatemia: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Hypophosphatemia: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Headache: Grade 21 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Headache: Grade 30 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Headache: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Headache: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral motor neuropathy: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral motor neuropathy: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral motor neuropathy: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral motor neuropathy: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral sensory neuropathy: Grade 20 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral sensory neuropathy: Grade 31 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral sensory neuropathy: Grade 40 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0Peripheral sensory neuropathy: Grade 50 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0All Reportable AEs: Grade 22 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0All Reportable AEs: Grade 318 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0All Reportable AEs: Grade 41 Treatment cycles
Stratum 1: Wims TumorIncidence of Toxicities of Lorvotuzumab Mertansine, Using the NCI Common Terminology Criteria for Adverse Events Version 4.0All Reportable AEs: Grade 51 Treatment cycles
Primary

Objective Response by Response Evaluation Criteria in Solid Tumors Version 1.1

The best response of disease will be examined separately in each stratum. A responder is defined as a patient who achieves a best response of partial response or complete response on the study. Response rates will be calculated as the percent of evaluable patients who are responders, and Clopper-Pearson confidence intervals will be constructed.

Time frame: Up to 18 weeks (6 courses)

Population: 2 participants were excluded from analysis; 1 participant never received treatment and 1 participant was ineligible, also never receiving treatment.

ArmMeasureValue (NUMBER)
Stratum 1: Wims TumorObjective Response by Response Evaluation Criteria in Solid Tumors Version 1.10.00 Percent of participants
Stratum 2: RhabdomyosarcomaObjective Response by Response Evaluation Criteria in Solid Tumors Version 1.16.25 Percent of participants
Stratum 3: NeuroblastomaObjective Response by Response Evaluation Criteria in Solid Tumors Version 1.10.00 Percent of participants
Stratum 4: Pleuropulmonary BlastomaObjective Response by Response Evaluation Criteria in Solid Tumors Version 1.10.00 Percent of participants
Stratum 5: Malignant Peripheral Nerve Sheath TumorObjective Response by Response Evaluation Criteria in Solid Tumors Version 1.10.00 Percent of participants
Stratum 6: Synovial SarcomaObjective Response by Response Evaluation Criteria in Solid Tumors Version 1.10.00 Percent of participants
Other Pre-specified

CD56 Expression

The association between CD56+ expression and response will be evaluated using the exact conditional test of proportions (Fisher?s Exact test). Analyses will be descriptive and exploratory and hypotheses generating in nature.

Time frame: Day 1 and 8 of course 1 prior to lorvotuzumab mertansine

Other Pre-specified

Pharmacokinetic (PK) Parameters of Lorvotuzumab Mertansine

A descriptive analysis of PK parameters of lorvotuzumab mertansine will be performed to define systemic exposure, drug clearance, and other pharmacokinetic parameters. The PK parameters will be summarized with simple summary statistics, including means, medians, ranges, and standard deviations (if numbers and distribution permit). Analyses will be descriptive and exploratory and hypotheses generating in nature.

Time frame: Pre-treatment, end of infusion, and 2, 6, 24, 48, and 96 hours after end of infusion on day 1 of course 1, and pre-treatment, end of infusion, and 2 and 6 hours after end of infusion on day 8 of course 1

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026