General Information of This Antibody
Antibody ID
ANI0IESDV
Antibody Name
Pinatuzumab
Organization
Genentech, Inc.
Indication
Neoplasms
Antibody Type
Monoclonal antibody (mAb)
Antibody Subtype
Humanized IgG1-kappa
Antigen Name
B-cell receptor CD22 (CD22)
 Antigen Info 
Click to Show/Hide the Sequence Information of This Antibody
Heavy Chain Sequence
EVQLVESGGGLVQPGGSLRLSCAASGYEFSRSWMNWVRQAPGKGLEWVGRIYPGDGDTNY
SGKFKGRFTISADTSKNTAYLQMNSLRAEDTAVYYCARDGSSWDWYFDVWGQGTLVTVSS
ASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSS
GLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKTHTCPPCPAPELLGG
PSVFLFPPKPKDTLMISRTPEVTCVVVDVSHEDPEVKFNWYVDGVEVHNAKTKPREEQYN
STYRVVSVLTVLHQDWLNGKEYKCKVSNKALPAPIEKTISKAKGQPREPQVYTLPPSREE
MTKNQVSLTCLVKGFYPSDIAVEWESNGQPENNYKTTPPVLDSDGSFFLYSKLTVDKSRW
QQGNVFSCSVMHEALHNHYTQKSLSLSPGK
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Light Chain Sequence
DIQMTQSPSSLSASVGDRVTITCRSSQSIVHSVGNTFLEWYQQKPGKAPKLLIYKVSNRF
SGVPSRFSGSGSGTDFTLTISSLQPEDFATYYCFQGSQFPYTFGQGTKVEIKRTVAAPSV
FIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSL
SSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC
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Each Antibody-drug Conjugate Related to This Antibody
Full Information of The Activity Data of The ADC(s) Related to This Antibody
Pinatuzumab vedotin [Phase 1/2 (discontinued)]
Identified from the Human Clinical Data
Click To Hide/Show 5 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Patients Enrolled
Eligible patients must have measurable relapsed/refractory hematologic malignancies (NHL, DLBCL, MCL, CLL) with &ge;12-week life expectancy. Key exclusions include recent antibody/ADC therapies (4-week washout), chemotherapy/radiation (2-week washout), or stem cell transplants (autologous <100 days, allogeneic prohibited).
Related Clinical Trial
NCT Number NCT01209130  Clinical Status PHASE1
Clinical Description
An Open-Label, Multicenter, Phase I Trial of the Safety and Pharmacokinetics of Escalating Doses of DCDT2980S in Patients With Relapsed or Refractory B-Cell Non-Hodgkin's Lymphoma and Chronic Lymphocytic Leukemia And DCDT2980S in Combination With Rituximab in Patients With Relapsed or Refractory B-Cell Non Hodgkin's Lymphoma
Primary Endpoint
DLTs will be monitored continuously throughout the study to evaluate treatment safety and tolerability, with data collected until early discontinuation if applicable.
Other Endpoint
Objective tumor response (CR/PR) will be assessed per standard criteria as a key efficacy measure, with evaluations ongoing until study completion or patient discontinuation.
Experiment 2 Reporting the Activity Date of This ADC [2]
Patients Enrolled
Eligible patients require ECOG 0-2, measurable r/r NHL/DLBCL (&ge;1 lesion >1.5cm), and archived tissue. Key exclusions: prior mAb/ADC &le;4 weeks, chemo/RT &le;2 weeks, unresolved grade >2 AEs (excluding neuropathy), allo/auto-SCT within 100 days, active CNS lymphoma, or live vaccines &le;28 days.
Administration Dosage
Pinatuzumab Vedotin 1.8 or 2.4 mg/kg administered by IV infusion on Day 1 or 2 of every 21-day cycle.
Related Clinical Trial
NCT Number NCT01691898  Clinical Status PHASE1|||PHASE2
Clinical Description
A Randomized, Open-Label, Multicenter, Phase II Trial Evaluating the Safety and Activity of Pinatuzumab Vedotin (DCDT2980S) in Combination With Rituximab or Polatuzumab Vedotin (DCDS4501A) in Combination With Rituximab and a Non-Randomized Phase Ib/II Evaluation of Polatuzumab Vedotin in Combination With Obinutuzumab in Patients With Relapsed or Refractory B-Cell Non-Hodgkin's Lymphoma

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Primary Endpoint
Tumor response endpoints will evaluate OR (CR/PR) per modified Cheson criteria (NHL) in rituximab/polatuzumab vedotin arms (A/B, Cohort C) and PET/CT-based CR (Lugano 2014) in obinutuzumab cohorts (E/G/H), with secondary assessments of DOR, PFS, OS, and progression rates across 3.5-5.5 years follow-up.
Other Endpoint
Immunogenicity (ADAs against pinatuzumab/polatuzumab vedotin/obinutuzumab) and pharmacokinetics (AUCinf, Cmax, CL, t½, Vss of rituximab/ADCs, plus MMAE-conjugated/unconjugated drug levels) will be serially monitored through 1.5-5.5 years to assess treatment sustainability and exposure-response relationships.
Experiment 3 Reporting the Activity Date of This ADC [3]
Efficacy Data Objective Response Rate (ORR)
36.00
50.00 %
Patients Enrolled
Relapsed/refractory (r/r) diffuse diffuse large B-cell lymphoma (DLBCL), iNHL (including follicular lymphoma, marginal zone lymphoma, and small lymphocytic lymphoma), mantle cell lymphoma (MCL), and chronic lymphocytic leukemia (CLL), and for whom no suitable therapy of curative intent or higher priority existed.
Administration Dosage
Intravenously over 30-90 minutes in 21-day cycles, starting dose of 0.10 mg/kg.
Related Clinical Trial
NCT Number NCT01209130  Clinical Status Phase 1
Clinical Description
An open-label, multicenter, phase 1 trial of the safety and pharmacokinetics of escalating doses of DCDT2980S in patients with relapsed or refractory B-cell non-Hodgkin's lymphoma and chronic lymphocytic leukemia and DCDT2980S in combination with rituximab in patients with relapsed or refractory B-cell non Hodgkin's lymphoma.
Primary Endpoint
On the basis of these observations, while 3.20 mg/kg did not exceed the protocol-defined MTD.
Experiment 4 Reporting the Activity Date of This ADC [4]
Efficacy Data Objective Response Rate (ORR)
54.05
66.67 %
Patients Enrolled
R/R diffuse large B-cell lymphoma (DLBCL), R/R follicular lymphoma (FL).
Administration Dosage
PiV + RTX (ADC 2.40 mg/kg + RTX 375 mg/m2) every 21 days.
Related Clinical Trial
NCT Number NCT01691898  Clinical Status Phase 1
Clinical Description
A randomized, open-label, multicenter, phase 2 trial evaluating the safety and activity of pinatuzumab vedotin (DCDT2980S) in combination with rituximab or polatuzumab vedotin (DCDS4501A) in combination with rituximab and a non-randomized phase 1b/2 evaluation of polatuzumab vedotin in combination with obinutuzumab in patients with relapsed or refractory B-cell non-Hodgkin's lymphoma.

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Primary Endpoint
For R/R DLBCL, ORR=51.35% (N=19/37, 95% Cl, 34.00-68.00), CR rate=13.51% (N=5/37, 95% Cl, 5.00-29.00) and PR rate=37.84% (N=14/37,95% Cl, 23.00-55.00) in patients treated with PoV (CD79b) + RTX. For R/R DLBCL, ORR=54.05% (N=20/37,95% Cl, 37.00-71.00),CR rate=18.92% (N=7/37,95% Cl, 8.00-35.00) and PR rate=35.14% (N=13/37,95% Cl, 20.00-53.00) in patients treated with PiV (CD22) + RTX.

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Other Endpoint
For R/R FL, ORR=60.00% (N=12/20,95% Cl 36.00-81.00), CR rate=30.00% (N=6/20, 95% Cl 12.00-54.00) and PR rate=30.00% (N=6/20,95% Cl 12.00-54.00) in patients treated with PoV (CD79b) + RTX. For R/R FL, ORR=66.67% (N=14/21,95% Cl 43.00-85.00), CR rate=4.76% (N=1/21, 95% Cl 0.10-24.00) and PR rate=61.90% (N=13/21,95% Cl 38.00-52.00) in patients treated with PiV (CD22) + RTX.

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Experiment 5 Reporting the Activity Date of This ADC [5]
Efficacy Data Objective Response Rate (ORR)
60.00
62.00 %
Patients Enrolled
Relapsed or refractory diffuse large B-cell lymphoma or relapsed or refractory grade 13a follicular lymphoma.
Administration Dosage
R-pina (375 mg/m2 rituximab plus 24 mg/kg ADCs) every 21 days until disease progression or unacceptable toxicity up to 1 year.
Related Clinical Trial
NCT Number NCT01691898  Clinical Status Phase 1
Clinical Description
A randomized, open-label, multicenter, phase 2 trial evaluating the safety and activity of pinatuzumab vedotin (DCDT2980S) in combination with rituximab or polatuzumab vedotin (DCDS4501A) in combination with rituximab and a non-randomized phase 1b/2 evaluation of polatuzumab vedotin in combination with obinutuzumab in patients with relapsed or refractory B-cell non-Hodgkin's lymphoma.

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Primary Endpoint
Pr=60.00%, CR=26.00% for large B-cell lymphoma. PR=62.00%,CR=70.00% for follicular lymphoma.
Anti-CD22- (LC:K149C)-SN36248 [Investigative]
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 4 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [6]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 95.70% Positive CD22 expression (CD22+++/++)
Method Description
The inhibitory activity of thio-hu anti-CD22-(LC:K149C)-SN36248 against cancer cell growth was compared with a Pinatuzumab vedotin (pina) and polatuzumab vedotin (pola) against various human cancer cell lines in vitro.
In Vitro Model EBV-related Burkitt lymphoma Raji cells CVCL_0511
Experiment 2 Reporting the Activity Date of This ADC [6]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 96% Positive CD22 expression (CD22+++/++)
Method Description
The inhibitory activity of thio-hu anti-CD22-(LC:K149C)-SN36248 against cancer cell growth was compared with a Pinatuzumab vedotin (pina) and polatuzumab vedotin (pola) against various human cancer cell lines in vitro.
In Vitro Model Diffuse large B-cell lymphoma WSU-DLCL2 cells CVCL_1902
Experiment 3 Reporting the Activity Date of This ADC [6]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 96.70% Positive CD22 expression (CD22+++/++)
Method Description
The inhibitory activity of thio-hu anti-CD22-(LC:K149C)-SN36248 against cancer cell growth was compared with a Pinatuzumab vedotin (pina) and polatuzumab vedotin (pola) against various human cancer cell lines in vitro.
In Vitro Model Burkitt lymphoma BJAB.Luc-22R1.2 cells CVCL_5711
Experiment 4 Reporting the Activity Date of This ADC [6]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 99.20% Positive CD22 expression (CD22+++/++)
Method Description
The inhibitory activity of thio-hu anti-CD22-(LC:K149C)-SN36248 against cancer cell growth was compared with a Pinatuzumab vedotin (pina) and polatuzumab vedotin (pola) against various human cancer cell lines in vitro.
In Vitro Model Burkitt lymphoma BJAB.Luc cells CVCL_5711
References
Ref 1 A Study of the Safety and Pharmacokinetics of Escalating Doses of DCDT2980S in Patients With Relapsed or Refractory B-Cell Non-Hodgkin's Lymphoma and Chronic Lymphocytic Leukemia And DCDT2980S in Combination With Rituximab in Patients With Relapsed or Refractory B-Cell Non Hodgkin's Lymphoma
Ref 2 A Study of Pinatuzumab Vedotin (DCDT2980S) Combined With Rituximab or Polatuzumab Vedotin (DCDS4501A) Combined With Rituximab or Obinutuzumab in Participants With Relapsed or Refractory B-Cell Non-Hodgkin's Lymphoma (NHL)
Ref 3 Phase I Study of the Anti-CD22 Antibody-Drug Conjugate Pinatuzumab Vedotin with/without Rituximab in Patients with Relapsed/Refractory B-cell Non-Hodgkin Lymphoma. Clin Cancer Res. 2017 Mar 1;23(5):1167-1176.
Ref 4 Preliminary results of a phase II randomized study (ROMULUS) of polatuzumab vedotin (PoV) or pinatuzumab vedotin (PiV) plus rituximab (RTX) in patients (Pts) with relapsed/refractory (R/R) non-Hodgkin lymphoma (NHL). Journal of Clinical Oncology 32, no. 15_suppl (May 20, 2014) 8519-8519.
Ref 5 Polatuzumab vedotin or pinatuzumab vedotin plus rituximab in patients with relapsed or refractory non-Hodgkin lymphoma: final results from a phase 2 randomised study (ROMULUS). Lancet Haematol. 2019 May;6(5):e254-e265.
Ref 6 An Anti-CD22-seco-CBI-Dimer Antibody-Drug Conjugate (ADC) for the Treatment of Non-Hodgkin Lymphoma That Provides a Longer Duration of Response than Auristatin-Based ADCs in Preclinical Models. Mol Cancer Ther. 2021 Feb;20(2):340-346.