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Trial · NCT03005327

A Dose Determination and Safety Study of X4P-001 (Mavorixafor) in Participants With Warts, Hypogammaglobulinemia, Infections, and Myelokathexis (WHIM) Syndrome

NCT03005327, Phase 2, Completed, X4 Pharmaceuticals; results first posted 2024-10-30

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. A Dose Determination and Safety Study of X4P-001 (Mavorixafor) in Participants With Warts, Hypogammaglobulinemia, Infections, and Myelokathexis (WHIM) Syndrome. Trials, record NCT03005327. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT03005327

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
A Dose Determination and Safety Study of X4P-001 (Mavorixafor) in Participants With Warts, Hypogammaglobulinemia, Infections, and Myelokathexis (WHIM) Syndrome
NCT number
NCT03005327
Status
Completed
Phases
Phase 2
Enrollment
8 participants, actual
Lead sponsor
X4 Pharmaceuticals
Conditions
WHIM Syndrome
Interventions
X4P-001
First posted
2016-12-29
Last updated
2024-10-30
Other registries' IDs
eudract:2016-005028-26
Results first posted
2024-10-30

Source ClinicalTrials.gov

Registered outcomes5

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryMean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)Time 0 (-15 minutes [min] pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
AUCANC was collected over a 24-hour period above clinically meaningful thresholds for the mavorixafor-treated participants over 6 months. The absolute neutrophil count (ANC) clinically meaningful threshold was defined as ANC ≥ 600/microliter (μL).
PrimaryAll Visits: Average Per-Participant Value of the AUCANCTime 0 (-15 min pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
AUCANC was collected over a 24-hour period above clinically meaningful thresholds for the mavorixafor-treated participants over 6 months. The ANC clinically meaningful threshold was defined as ANC ≥ 600/μL. Data for this outcome measure are reported as an "All Visits" summary based on the mean of AUCs that is, the per-participant average of the AUCANC across the 3 visits where participant was treated with at least 300/400 mg dose. Time frame reported is based on data collection time points.
PrimaryMean Value of the Area Under the Plasma Concentration-time Curve for Absolute Lymphocyte Count (AUCALC)Time 0 (-15 min pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
AUCALC was collected over a 24-hour period above clinically meaningful thresholds for the mavorixafor-treated participants over 6 months. The absolute lymphocyte count (ALC) clinically meaningful threshold was defined as ALC ≥ 1000/μL.
PrimaryAll Visits: Average Per-Participant Value of the AUCALCTime 0 (-15 min pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
AUCALC was collected over a 24-hour period above clinically meaningful thresholds for the mavorixafor-treated participants over 6 months. The ALC clinically meaningful threshold was defined as ALC ≥ 1000/μL. Data for this outcome measure are reported as an "All Visits" summary based on the mean of AUCs that is, the per-participant average of the AUCALC across the 3 visits where participant was treated with at least 300/400 mg dose. Time frame reported is based on data collection time points.
PrimaryNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)From first dose of study drug through 10 days after the last dose of the study drug (Maximum exposure: 1712 days)
An adverse event (AE) was defined as any untoward medical occurrence that developed or worsened in severity during the conduct of a clinical study and did not necessarily have a causal relationship to the study drug. SAEs included death, a life-threatening adverse event, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, or an important medical event that jeopardized the participant and required medical intervention to prevent 1 of the outcomes listed in this definition. A TEAE was defined as any AE that began or worsened in severity or frequency on or after the start of study drug through 10 days after the last dose of the study drug. A summary of serious and non-serious AEs regardless of causality is located in 'Reported Adverse Events module'.

Outcomes5

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYMean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)Time 0 (-15 minutes [min] pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
Overall Number of Participants Analyzed=number of participants in safety population (all participants who received at least 1 dose of study medication). 'Number analyzed'=number of participants with data above clinically meaningful thresholds at specified timepoints. Participants included in 1 category may be different than participants in other categories. Data for this Outcome Measure were collected by dose level; therefore, participants may have been included in more than 1 arm (dose level).
cells*hour/μLMEAN
PRIMARYAll Visits: Average Per-Participant Value of the AUCANCTime 0 (-15 min pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
The Safety Population included all participants who received at least 1 dose of the study medication (mavorixafor). Here, 'Overall number of participants analyzed' = participants evaluable for this outcome measure.
cells*hour/μLMEAN
PRIMARYMean Value of the Area Under the Plasma Concentration-time Curve for Absolute Lymphocyte Count (AUCALC)Time 0 (-15 min pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
Overall Number of Participants Analyzed=number of participants in safety population (all participants who received at least 1 dose of study medication). 'Number analyzed'=number of participants with data above clinically meaningful thresholds at specified timepoints. Participants included in 1 category may be different than participants in other categories. Data for this Outcome Measure were collected by dose level; therefore, participants may have been included in more than 1 arm (dose level).
cells*hour/μLMEAN
PRIMARYAll Visits: Average Per-Participant Value of the AUCALCTime 0 (-15 min pre-dose), 30, 60, and 90 min (each ± 5 min) and 2, 3, 4, 8, 12, 16, and 24 hours (each ±15 min) at Weeks 5, 13, and 21
The Safety Population included all participants who received at least 1 dose of the study medication (mavorixafor). Here, 'Overall number of participants analyzed' = participants evaluable for this outcome measure.
cells*hour/μLMEAN
PRIMARYNumber of Participants With Treatment-Emergent Adverse Events (TEAEs)From first dose of study drug through 10 days after the last dose of the study drug (Maximum exposure: 1712 days)
The Safety Population included all participants who received at least 1 dose of the study medication (mavorixafor). Data for this Outcome Measure were collected by dose level; therefore, participants may have been included in more than one arm (dose level).
ParticipantsCOUNT_OF_PARTICIPANTS

Results by group33

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 50 mgWeek 5-12574.63Standard Deviation 156.094cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 100 mgWeek 5-6206.75Standard Deviation 4238.280cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 200 mgWeek 5-6949.58cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 300 mgWeek 524175.00Standard Deviation 777.817cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 300/400 mgWeek 524175.00Standard Deviation 777.817cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 100 mgWeek 13-11291.96Standard Deviation 1509.496cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 200 mgWeek 13-7575.21Standard Deviation 2701.443cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 300 mgWeek 13-2602.50cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 300/400 mgWeek 13-2602.50cells*hour/μL
Mean Value of the Area Under the Plasma Concentration-time Curve for Absolute Neutrophil Count (AUCANC)X4P-001 150 mgWeek 21-8723.00Standard Deviation 2695.962cells*hour/μL

Participant flow28

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Initial Treatment Period (24 Weeks)STARTEDX4P-001 50 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)STARTEDX4P-001 100 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)STARTEDX4P-001 200 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)STARTEDX4P-001 300 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)Received at Least 1 Dose of Study DrugX4P-001 50 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)Received at Least 1 Dose of Study DrugX4P-001 100 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)Received at Least 1 Dose of Study DrugX4P-001 200 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)Received at Least 1 Dose of Study DrugX4P-001 300 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)COMPLETEDX4P-001 50 to up to 400 mg/kg2
Initial Treatment Period (24 Weeks)COMPLETEDX4P-001 100 to up to 400 mg/kg1

Adverse events462

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherEustachian tube obstructionEar and labyrinth disordersX4P-001 50 mg02
otherEustachian tube obstructionEar and labyrinth disordersX4P-001 100 mg04
otherEustachian tube obstructionEar and labyrinth disordersX4P-001 150 mg03
otherEustachian tube obstructionEar and labyrinth disordersX4P-001 200 mg04
otherEustachian tube obstructionEar and labyrinth disordersX4P-001 300 mg17
otherEustachian tube obstructionEar and labyrinth disordersX4P-001 400 mg05
otherEustachian tube obstructionEar and labyrinth disordersOverall Participants18
otherOtorrhoeaEar and labyrinth disordersX4P-001 50 mg12
otherOtorrhoeaEar and labyrinth disordersX4P-001 100 mg04
otherOtorrhoeaEar and labyrinth disordersX4P-001 150 mg03

Adverse event totals21

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityX4P-001 50 mg02
Total, all-cause mortalityX4P-001 100 mg04
Total, all-cause mortalityX4P-001 150 mg03
Total, all-cause mortalityX4P-001 200 mg04
Total, all-cause mortalityX4P-001 300 mg07
Total, all-cause mortalityX4P-001 400 mg05
Total, all-cause mortalityOverall Participants08
Total, other adverse eventsX4P-001 50 mg22
Total, other adverse eventsX4P-001 100 mg24
Total, other adverse eventsX4P-001 150 mg23

Papers1

The papers the trial lists on ClinicalTrials.gov.

PMIDListed as
32870250DERIVED

Source PubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT03005327

GET https://conductscience.org/api/trials/v1/NCT03005327/results?page=2