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Dose Escalation Study in Patients With Relapsed or Refractory DLBCL and MyD88 L265P Mutation

Phase I/II Open-label, Multiple-dose, Dose-escalation Study to Evaluate the Safety and Tolerability of IMO-8400 in Patients With Relapsed or Refractory Diffuse Large B-Cell Lymphoma and Presence of the MyD88 L265P Mutation

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02252146
Enrollment
6
Registered
2014-09-30
Start date
2014-06-30
Completion date
2016-12-31
Last updated
2017-12-12

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

Conditions

Diffuse Large B Cell Lymphoma

Keywords

DLBCL, MYD88 L265P, Lymphoma, Diffuse Large B Cell Lymphoma, Idera, IMO 8400

Brief summary

Recent reports have identified a specific oncogenic mutation L265P of the MYD88 gene in approximately 30% of the patients with the activated B-cell (ABC) type of Diffuse Large B Cell Lymphoma (DLBCL). MYD88 is an initial adapter linker protein in the signaling pathway of the Toll Like Receptors (TLRs), including the endosomal TLRs 7, 8, and 9, for which the ligands are nucleic acids. IMO-8400 is an oligonucleotide specifically designed to inhibit ligand activation of TLRs 7,8, and 9. Recent studies indicate that in the presence of L265P mutation ligand activation of those TLRs results in markedly increased signaling with subsequent increased cell activation, cell survival, and cell proliferation. The scientific rationale for assessing the use of IMO-8400 to treat patients with DLBCL and the L265P mutation is based on laboratory observations that IMO-8400 inhibits ligand-based activation of cells with the mutation and decreases the survival and proliferation of the cell populations responsible for the propagation of the disease.

Detailed description

Eligible subjects will be enrolled and assigned to one of five dose cohorts. Treatment will be administered by subcutaneous injection until progression or intolerable toxicity.

Interventions

MO-8400 given subcutaneously twice weekly

Sponsors

Idera Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Patients must have a diagnosis of Diffuse Large B Cell Lymphoma (DLBCL) of non-GCB subtype, established according to the World Health Organization (WHO) criteria that has been tested for the MyD88 L265P mutation. * In addition to the above, key inclusion and

Exclusion criteria

are listed below. 1. Be at least 18 years of age 2. Agree to use contraception

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Adverse Events, Injection Site Reactions, and Concomitant MedicationsUp to 2 years from first patient visitFrequency of adverse events, injection site reactions, and concomitant medications observed

Countries

United States

Participant flow

Participants by arm

ArmCount
IMO-8400
IMO-8400 0.3 mg/kg twice weekly, 0.6 mg/kg twice weekly, or 1.2 mg/kg twice weekly IMO-8400: MO-8400 given subcutaneously twice weekly
6
Total6

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyEntered hospice care1
Overall StudyInability to travel to study site1
Overall StudyLack of Efficacy4

Baseline characteristics

CharacteristicIMO-8400
Age, Continuous67 years
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
1 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
5 Participants
Region of Enrollment
United States
6 participants
Sex: Female, Male
Female
4 Participants
Sex: Female, Male
Male
2 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
1 / 6
other
Total, other adverse events
4 / 6
serious
Total, serious adverse events
1 / 6

Outcome results

Primary

Number of Participants With Adverse Events, Injection Site Reactions, and Concomitant Medications

Frequency of adverse events, injection site reactions, and concomitant medications observed

Time frame: Up to 2 years from first patient visit

Population: Safety population

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
IMO-8400Number of Participants With Adverse Events, Injection Site Reactions, and Concomitant MedicationsSubjects with TEAEs4 Participants
IMO-8400Number of Participants With Adverse Events, Injection Site Reactions, and Concomitant MedicationsSubjects with ISRs1 Participants
IMO-8400Number of Participants With Adverse Events, Injection Site Reactions, and Concomitant MedicationsSubjects with Concomitant Medications3 Participants

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