HealthyPhase 1NCT01465139
A Study to Evaluate CDX-301 (rhuFlt3L) in Healthy Volunteers
A Phase 1 study testing CDX-301 in people with Healthy, run by Celldex Therapeutics at 1 site in United States.
Trial summary
CDX-301 is a protein that stimulates the growth of bone marrow stem cells and certain immune cells. This study is testing CDX-301 in healthy volunteers who will be monitored for safety and biological response for approximately one month or more. Read more about this study
- Who is it for?
- Ages 18 to 55 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- CDX-301
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2011to Jan 2013
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 55 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Among other criteria, volunteers must meet the following conditions to be eligible for the study:
- Ages 18 - 55
- Body Weight ≤ 120 kg
- Generally good health and without significant medical conditions
- Willing to use effective method of contraception
- Abstinence from alcohol for 72 hours prior to study drug administration and throughout the study
- Negative screening test for HIV, hepatitis B, and hepatitis C
- Provide written informed consent
Who cannot join
- Among other criteria, volunteers who meet the following conditions are NOT eligible for the study:
- Drug or alcohol abuse within 12 months
- Positive drug screen
- Receipt of certain types of experimental drugs or other treatments, or certain medications
- Use of systemic immunosuppressive agents (excluding topical steroids) within 12 months
- History of certain diseases including syphilis, herpes zoster, primary or secondary immunodeficiency
Show all 11Show fewer
- Diagnosis with or family history of significant autoimmunity (ex: type I diabetes, multiple sclerosis, rheumatoid arthritis, scleroderma)
- Any history of cancer, excluding adequately treated and cured basal or squamous cell carcinoma of the skin, or cervical carcinoma in situ within 2 years
- History of asthma requiring any use of inhaled or oral medication within 5 years
- Herpes zoster within 3 months
- Donation of blood within 8 weeks, and donation of plasma within 2 weeks
Trial locations and contacts
1 site in 1 country.
About this study
Official title: A Phase 1 Safety, Pharmacokinetic, and Immunologic Study to Evaluate CDX-301 (rhuFlt3L) in Healthy Volunteers
CDX-301 is a protein that stimulates the growth of bone marrow stem cells and certain immune cells. This study is testing CDX-301 in healthy volunteers who will be monitored for safety and biological response for approximately one month or more.
Read the detailed description
A total of seven cohorts of healthy volunteers are planned with doses of CDX-301 (rhuFlt3L) ranging between 1 and 75 μg/kg and dosing durations between 5 and 10 days.
Volunteers will be admitted to an inpatient unit during the Treatment Period. Blood samples will be collected periodically to assess the effect of CDX-301. Volunteers will be followed for safety for 28 days following the last dose. Any volunteer who develops anti-CDX-301 antibodies will be followed monthly until the antibody response is below the limit of detection. In general, the total duration of the study will be between approximately 33-38 days.
- Conditions
- Healthy
- Being tested
- CDX-301
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CDX-301Drug
CDX-301, administered in multiple dosages and frequencies depending on arm:
n=3-6 at between 1-75 μg/kg over 5 days
n=3-6 at 25 μg/kg over 7 days
n=3-6 at 25 μg/kg over 10 days
| Study group | Role | What they receive |
|---|---|---|
| CDX-301 | Experimental | CDX-301 (rhuFlt3L), administered to healthy patients. Receives: Drug: CDX-301 |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of reported adverse events
The number of adverse events along with the results of vital sign measurements, physical examinations, and clinical laboratory tests will be used to determine the safety profile of CDX301.
Measured: Until day 28 of follow up.
Secondary outcomes (2)
Determination of PK profile of CDX301
Levels of CDX301 in circulating blood will be evaluated by measures such as AUC, Cmax, T1/2, and Tmax
Measured: Until day 28 of follow up or until resolution.
Immune system effects (eg: anti-CDX-301 antibody development, lymphoid cell populations, serum cytokines, and response to recall antigens and vaccination).
Measured: Until day 28 of follow up
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Nov 2011 (estimated)
- Study startOct 2011
- Primary completionNov 2012
- Study completionJan 2013
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for HealthyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Other
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- Celldex Therapeutics
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01465139
- Sponsor's protocol ID
- CDX301-02
- Status last verified
- Jun 2017
- First submitted
- 13 Oct 2011
- Last updated
- 27 Jun 2017
- Results posted
- No
- Data monitoring committee
- No
Publications
Anandasabapathy N, Breton G, Hurley A, Caskey M, Trumpfheller C, Sarma P, Pring J, Pack M, Buckley N, Matei I, Lyden D, Green J, Hawthorne T, Marsh HC, Yellin M, Davis T, Keler T, Schlesinger SJ. Efficacy and safety of CDX-301, recombinant human Flt3L, at expanding dendritic cells and hematopoietic stem cells in healthy human volunteers. Bone Marrow Transplant. 2015 Jul;50(7):924-30. doi: 10.1038/bmt.2015.74. Epub 2015 Apr 27.
PubMed 25915810
Study at a glance
From the registry record, last updated by the sponsor on 27 Jun 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 1 Safety, Pharmacokinetic, and Immunologic Study to Evaluate CDX-301 (rhuFlt3L) in Healthy Volunteers
- ClinicalTrials.gov ID
- NCT01465139
- Acronym / sponsor ID
- CDX301-02
- Conditions
- Healthy
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- Celldex TherapeuticsIndustry (pharma, biotech, devices)
- Study start
- Oct 2011
- Primary completion
- Nov 2012 (actual)
- Study completion
- Jan 2013 (actual)
- First posted
- 4 Nov 2011 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
CDX-301 is a protein that stimulates the growth of bone marrow stem cells and certain immune cells. This study is testing CDX-301 in healthy volunteers who will be monitored for safety and biological response for approximately one month or more.
Detailed description
A total of seven cohorts of healthy volunteers are planned with doses of CDX-301 (rhuFlt3L) ranging between 1 and 75 μg/kg and dosing durations between 5 and 10 days.
Volunteers will be admitted to an inpatient unit during the Treatment Period. Blood samples will be collected periodically to assess the effect of CDX-301. Volunteers will be followed for safety for 28 days following the last dose. Any volunteer who develops anti-CDX-301 antibodies will be followed monthly until the antibody response is below the limit of detection. In general, the total duration of the study will be between approximately 33-38 days.
Study design
- Primary purpose
- Other
- Allocation
- Non-randomised
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| CDX-301 | Experimental | Drug: CDX-301CDX-301 (rhuFlt3L), administered to healthy patients. |
Who may qualify
- Ages
- 18 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (8 listed)
- Among other criteria, volunteers must meet the following conditions to be eligible for the study:
- Ages 18 - 55
- Body Weight ≤ 120 kg
- Generally good health and without significant medical conditions
- Willing to use effective method of contraception
Key exclusion criteria (11 listed)
- Among other criteria, volunteers who meet the following conditions are NOT eligible for the study:
- Drug or alcohol abuse within 12 months
- Positive drug screen
- Receipt of certain types of experimental drugs or other treatments, or certain medications
- Use of systemic immunosuppressive agents (excluding topical steroids) within 12 months
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CDX-301CDX-301, administered in multiple dosages and frequencies depending on arm: n=3-6 at between 1-75 μg/kg over 5 days n=3-6 at 25 μg/kg over 7 days n=3-6 at 25 μg/kg over 10 days | Drug | CDX-301 |
Primary outcome
Number of reported adverse events
Time frame: Until day 28 of follow up.
The number of adverse events along with the results of vital sign measurements, physical examinations, and clinical laboratory tests will be used to determine the safety profile of CDX301.
2 secondary outcomes
Determination of PK profile of CDX301
Time frame: Until day 28 of follow up or until resolution.
Immune system effects (eg: anti-CDX-301 antibody development, lymphoid cell populations, serum cytokines, and response to recall antigens and vaccination).
Time frame: Until day 28 of follow up
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jun 2017.
- Background: PubMed 25915810Anandasabapathy N, Breton G, Hurley A, Caskey M, Trumpfheller C, Sarma P, Pring J, Pack M, Buckley N, Matei I, Lyden D, Green J, Hawthorne T, Marsh HC, Yellin M, Davis T, Keler T, Schlesinger SJ. Efficacy and safety of CDX-301, recombinant human Flt3L, at expanding dendritic cells and hematopoietic stem cells in healthy human volunteers. Bone Marrow Transplant. 2015 Jul;50(7):924-30. doi: 10.1038/bmt.2015.74. Epub 2015 Apr 27.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing CDX-301 in people with Healthy, run by Celldex Therapeutics at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 Jun 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of reported adverse events (time frame: Until day 28 of follow up.). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01465139, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jun 2017; AzTrials last refreshed its copy on 7 Nov 2026.