ClinicalTrials.gg
CompletedNCT03337451Updated Jan 28, 2019

Follow up Protocol to the Phase I/II Study of OPN-305 in Second-line or Third-line Lower Lower Risk Myelodysplastic Syndrome

A Phase 1/2 interventional study of OPN-305 in Myelodysplastic Syndrome, sponsored by Opsona Therapeutics Ltd.. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2019-01-28.

Sponsored by Opsona Therapeutics Ltd. · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jan 2019, 7 years 10 months ago, and no results have been posted to the registry; the sponsor requested a delay in submitting them in Jan 2019.
Phase
Phase 1/2
Study type
Interventional
Enrollment
14
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This protocol is a follow-up for patients receiving continuation of OPN-305 monotherapy treatment or combination treatment with azacitidine after completion of the dose confirming, dose expansion and HMA naïve parts of the main study OPN-305-106.

02

Conditions studied

  • Myelodysplastic Syndrome
03

In context

Myelodysplastic Syndromes

1,997 studies on the registry are indexed under Myelodysplastic Syndromes; 324 are open to participants now.

This study's enrollment of 14 is below the median of 40 across 1,611 interventional studies indexed under Myelodysplastic Syndromes.

Browse Myelodysplastic Syndromes studies →

Lead sponsor

Opsona Therapeutics Ltd. is the lead sponsor of 3 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Completion of the OPN-305-106 study
  • Principal Investigator adjudicated efficacy response defined as either transfusion independence", "stable disease", "minor HI-E response" or "major HI-E response" and in the opinion of the Principal Investigator the patient may benefit from continued treatment with OPN-305 monotherapy or combination treatment with azacitidine.
  • Provide written for the follow up protocol.

Exclusion criteria

Exclusion Criteria:

  • Refusal to provide written
  • Withdrawal from the OPN-305-106 study prior to the final EOT visit
  • Plan to be included into another interventional study.
  • Progression of disease
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
14 participants (actual)

Study arms

  • Experimental
    OPN-305

    Drug: OPN-305

Interventions

  • Patients will receive study drug every 4 weeks

06

What researchers measure

Primary outcomes

  1. Incidence and types of Serious Adverse events

    Time frame: monthly through study completion, an average of 18 months

  2. monitor ongoing efficacy responses

    To monitor ongoing efficacy responses defined as "transfusion independence". Transfusion independence is defined as 56 consecutive days where no RBC transfusions are given

    Time frame: monthly through study completion, an average of 18 months

07

Study locations

1 site
  • Research Site
    Houston, Texas 77030, United States
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2018 to primary completion in Jan 2019, 10 months.

Of 41 industry-sponsored phase 1/2 interventional studies under Myelodysplastic Syndromes, half reached primary completion within 78 months of starting (the median), counting those still running; a quarter within 56 and three quarters within 91. This study's 10 months is below that.

Counting every sponsor, half of 109 studies reached it within 78 months; a quarter within 49 and three quarters within 110.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 18, 2017
First posted
Nov 9, 2017
StartActual
Feb 27, 2018
Primary completionActual
Jan 10, 2019
CompletionActual
Jan 10, 2019
Results delay requested
Jan 24, 2019
Last update
Jan 28, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jan 28, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03337451
Lead sponsor
Opsona Therapeutics Ltd.
Responsible party
Sponsor
First posted
Nov 9, 2017
Start date
Feb 27, 2018
Primary completion
Jan 10, 2019
Completion
Jan 10, 2019
Last update
Jan 28, 2019

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

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Discussion

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