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An Open Label, Phase 1/2 Study of MEDI-551, a Humanized Monoclonal Antibody Directed Against CD19, in Adult Subjects With Relapsed or Refractory Advanced B-Cell Malignancies

An Open Label, Phase 1/2 Study of MEDI-551, a Humanized Monoclonal Antibody Directed Against CD19, in Adult Subjects With Relapsed or Refractory Advanced B-Cell Malignancies

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2009-016378-34-FR
Enrollment
134
Registered
2010-05-25
Start date
2010-07-13
Completion date
Unknown
Last updated
2020-06-02

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

Conditions

Relasped or refractory advanced B-cell malignancies: chronic lymphocytic leukemia (CLL), multiple myeloma (MM), B-cell non-Hodgkin’s lymphoma (NHL) (subtypes: follicular lymphoma (FL) and diffuse large B-cell lymphoma (DLBCL)) MedDRA version: 12.1 Level: LLT Classification code 10008976 Term: Chronic lymphocytic leukemia MedDRA version: 12.1 Level: LLT Classification code 10012818 Term: Diffuse large B-cell lymphoma MedDRA version: 12.1 Level: LLT Classification code 10028228 Term: Multipl

Interventions

Product Name: MEDI-551 Product Code: MEDI-551 Pharmaceutical Form: Solution for infusion INN or Proposed INN: NA CAS Number: NA Current Sponsor code: NA Other descriptive name: 16C4-aFuc Concentration

Sponsors

MedImmune, LLC
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Men or women at least 18 years of age or older at time of study entry; 2) Written informed consent and HIPAA authorization (applies to covered entities in the USA only) obtained from the subject/legal representative prior to performing any protocol-related procedures, including screening evaluations; 3) Histologically confirmed CLL (including SLL), DLBCL, FL, or MM; 4) Subjects with histologically-confirmed B-cell NHL (FL or DLBCL) must: •Be relapsed or refractory after at least one prior regimen containing rituximab, either alone or in combination; •Have measurable disease (at least one lesion = 20 mm in one dimension or =15 mm in two dimensions as measured by conventional or high resolution [spiral] computed tomography (CT); •Not be candidates for hematopoietic stem cell (HSC) or bone marrow (BM) transplant; 5) For B-cell CLL subjects, the following criteria are required for eligibility: •Previous confirmation of B-cell CLL with a characteristic immunophenotype by flow cytometry; •Be relapsed or refractory after at least 2 prior lines of treatment, at least one of which must have contained rituximab and not be a candidate for hematopoietic stem cell (HSC) or bone marrow (BM) transplant; •Have symptomatic disease that requires treatment; 6) For subjects with MM, the following criteria are required: •Be relapsed or refractory after at least one prior line of therapy; •Not be a candidate for HSC or BM transplant; •Indication for active treatment as follows: •Presence of an M-component in serum and/or urine plus clonal plasma cells in the bone marrow and/or documented clonal plasmacytoma; •Plus one or more of the following: •Calcium elevation (> 11.5 mg/dL); •Renal insufficiency (creatinine > 2.0 mg/dL); •Anemia (hemoglobin < 10 g/dL); •Bone disease (lytic bone lesions by X-ray or CT scan or osteopenia considered secondary to MM); 7) Karnofsky Performance Status = 70; 8) Life expectancy of = 12 weeks; 9) Prior radiation therapy is allowed provided exposure does not exceed an area of 25% of marrow space; 10) Adequate hematological function defined as: •Hemoglobin = 9 g/dL; •Absolute neutrophil count = 1500/mm3; •Platelet count = 75,000/mm3 (except for CLL subjects with evidence of bone marrow disease, who must have a platelet count = 50,000/mm3);; 11) Adequate organ function defined as follows: •Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) = 2 × institutional upper limit of normal (ULN); •Bilirubin = 1.5 × ULN except in the case of subjects with documented Gilbert’s disease, = 2.5 × ULN; •Serum creatinine < ULN or for MM only, < 5 × ULN; 12) Female subjects of childbearing potential who are sexually active with a non-sterilized male partner must use adequate contraception from screening through 90 days after the last dose of MEDI-551. An acceptable method of contraception is defined as one that has no higher than a 1% failure rat. Sustained abstinence is an acceptable practice; however, periodic abstinence, the rhythm method, and the withdrawal method are not acceptable methods of contraception. Non-sterilized males who are sexually active with a female of child-bearing potential must use adequate contraception from screening through 90 days after the last dose of MEDI-551; •Females or female partners not of childbearing potential must have been surgically sterilized (eg, hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or postmenopausal (defined as at least 1 year since last regular menses). S

Exclusion criteria

Exclusion criteria: 1) Any available standard line of therapy known to be life-prolonging or life-saving; 2) Any concurrent chemotherapy, radiotherapy, immunotherapy, biologic or hormonal therapy for treatment of cancer; 3) History of allergy or reaction to any component of the MEDI-551 formulation; 4) Receipt of any chemotherapy or small molecule targeted therapy (such as imatinib or other tyrosine kinase inhibitors, and including any experimental therapies) regimens within 6 weeks prior to the first dose of MEDI-551; 5) Receipt of any biological or immunological-based therapies (including experimental therapies) for leukemia, lymphoma, or myeloma (including, but not limited to, monoclonal antibody therapy such as rituximab, or cancer vaccine therapies) within 6 weeks prior to the first dose of MEDI-551 (This time period is approximately 2 terminal elimination half-lives of rituximab, and represents a reasonable time for subjects with progressing disease to wait for therapy). 6) Previous therapy directed against CD19, such as monoclonal antibodies or monoclonal antibody conjugates; 7) Vaccination (other than experimental cancer vaccine therapy) within 28 days prio to receiving the first dose of MEDI-551; 8) History of other invasive malignancy within 5 years except for cervical carcinoma in situ (CIS), non-melanomatous carcinoma of the skin or ductal carcinoma in situ (DCIS) of the breast that have been surgically cured; 9) Evidence of significant active infection requiring antimicrobial, antifungal, antiparasitic, or antiviral therapy or for which other supportive care is given; 10) Autologous stem cell transplantation within 12 weeks prior to study entry; 11) Allogeneic stem cell transplantation or any other organ transplant; 12) HIV positive serology or AIDS; 13) Active hepatitis B or C infection as defined by seropositivity for hepatitis B (HBsAg) or hepatitis C antibody, and elevated liver transaminases; 14) Ongoing = Grade 2 toxicities from previous cancer therapies unless specifically allowed in the Inclusion/Exclusion criteria. For subjects with MM, serum calcium must be < Grade 4 (< 13.5 mg/dL) and serum creatinine must be < 5 × ULN; 15) Use of immunosuppressive medication other than steroids within 28 days before the first dose of MEDI-551; 16) Use of systemic steroids within 7 days before the first dose of MEDI-551 (inhaled and topical corticosteroids are permitted). Subjects may take replacement doses of steroids (defined as = 30 mg/day hydrocortisone or the equivalent) if on a stable dose for at least 2 weeks prior to the first dose of MEDI-551; 17) Documented current central nervous system involvement by leukemia or lymphoma; 18) Pregnancy or lactation; 19) Previous medical history, or evidence, of an intercurrent illness that at the discretion of the principal investigator may compromise the safety of the subject in the study; 20) Clinically significant abnormality on ECG. The QTc (Fridericia) for men must be < 470 msec, and for women < 490 msec; 21) Any physical, social, or psychiatric condition that would prevent effective cooperation or participation in the study; 22) Concurrent enrollment in another clinical study; 23) Employees of the clinical study site or any other individuals involved with the conduct of the study, or immediate family members of such individuals.

Design outcomes

Primary

MeasureTime frame
Main Objective: The primary objective of this study is to determine the MTD or OBD of MEDI-551 in subjects with relapsed or refractory advanced B-cell malignancies and to determine the preliminary safety profile of MEDI-551. ;Secondary Objective: 1 To determine the preliminary efficacy profile of MEDI-551 in subjects with the following advanced B-cell malignancies: •CLL •DLBCL •FL •MM 2 To determine the pharmacokinetics (PK) of MEDI-551 in subjects with advanced B cell malignancies. 3 To determine the effect of treatment with MEDI-551 on circulating lymphocyte populations and immunoglobulin levels, including time to recovery after treatment. 4 To determine the immunogenicity of MEDI-551 in these patient populations. ;Primary end point(s): Maximum Tolerated Dose / Optimal Biological Dose and Safety

Countries

Belgium, France

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026