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Danicopan

Phase 3

Paroxysmal Nocturnal Hemoglobinuria | Small molecule | Hematology |AstraZeneca PLC|Last Updated: Jun 18, 2026

Target and mechanism

Molecular targetCFD
Target classInhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials3
Total Enrollment172

FDA Designations

No designations recorded

Clinical trial landscape

Danicopan · 20 trials · 12 indications

Phase 3 3Phase 2 4Phase 1 13
NCT06449001Study of Danicopan as Add-on Treatment to Ravulizumab or Eculizumab in Pediatric Participants With PNH Who Have Clinically Significant Extravascular HemolysisParoxysmal Nocturnal Hemoglobinuria
RECRUITING6 Analytics
NCT05389449A Long-term Safety and Efficacy Study of Danicopan as an Add-on Therapy to Complement Component 5 Inhibitor (C5i) in Participants With PNHParoxysmal Nocturnal Hemoglobinuria
ACTIVE NOT_RECRUITING80 Analytics
NCT04469465Danicopan as Add-on Therapy to a C5 Inhibitor in Paroxysmal Nocturnal Hemoglobinuria (PNH) Participants Who Have Clinically Evident Extravascular Hemolysis (EVH)(ALPHA)Paroxysmal Nocturnal Hemoglobinuria
COMPLETED86 Analytics
PHASE3RECRUITING
Study of Danicopan as Add-on Treatment to Ravulizumab or Eculizumab in Pediatric Participants With PNH Who Have Clinically Significant Extravascular Hemolysis
Paroxysmal Nocturnal HemoglobinuriaUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Long-term Safety and Efficacy Study of Danicopan as an Add-on Therapy to Complement Component 5 Inhibitor (C5i) in Participants With PNH
Paroxysmal Nocturnal HemoglobinuriaUnlock trial analytics
PHASE3COMPLETED
Danicopan as Add-on Therapy to a C5 Inhibitor in Paroxysmal Nocturnal Hemoglobinuria (PNH) Participants Who Have Clinically Evident Extravascular Hemolysis (EVH)(ALPHA)
Paroxysmal Nocturnal HemoglobinuriaUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in Hemoglobin (Hgb) Concentration at Week 12
Baseline, Week 12
Participants Experiencing Treatment-emergent Adverse Events (TEAEs) And Serious TEAEs
Up to 3 years
Change From Baseline in Hgb at Week 12
Baseline, Week 12

Baseline was defined as the lowest Hgb value observed between and including Screening and Day 1. The least square (LS) mean and standard error (SE) were produced using mixed-effect model for repeated measures (MMRM). Hgb values collected within 4 weeks after transfusion were not included in the MMRM.

Change From Baseline In Composite Biopsy Score At Week 28
Baseline, Week 28

The composite biopsy score was based on a score incorporating changes in the activity index, glomerular C3c staining, and glomerular macrophage infiltration at the end of 6 months of treatment. The composite renal biopsy index scoring system ranged from 0 to 21, with higher scores indicating worse outcomes.

Participants With Reduction In Proteinuria At Week 28
Week 28

Proteinuria reduction was defined as ≥ 30% decrease from baseline based on 24-hour urine protein (mg/day).

Change From Baseline In Hemoglobin At Week 24
Baseline, Week 24
Change From Baseline In Serum C3 Complement Protein (C3) Levels On Day 15
Baseline, Day 15

Serum C3 levels were measured by conventional Roche immunoturbidimetric assay method. Change from Baseline = Serum C3 levels on Day 15 - Baseline Serum C3 levels

Change From Baseline In Plasma Intact C3 Level On Day 15
Baseline, Day 15

Plasma Intact C3 level were measured by a novel multiplex assay method. Change from Baseline = Plasma Intact C3 levels on Day 15 - Baseline Plasma Intact C3 levels

Change From Baseline In Serum LDH Levels At Day 28
Baseline, Day 28

Change from Baseline = Serum LDH levels on Day 28 - Baseline Serum LDH levels.

Relative Bioavailability Of Danicopan Prototype PIC 1 Formulation And Tablet Formulation
Up to 72 hours postdose

The relative bioavailability of the PIC 1 formulation versus the tablet formulation will be measured by the ratio of select pharmacokinetic (PK) parameters: maximum observed plasma concentration (Cmax), area under the concentration-time curve from time of administration to the last measurable concentration (AUC0-t), and area under the concentration-time curve from time 0 extrapolated to infinity (AUC0-inf).

AUC0-inf Of Danicopan Prototype PIC 1 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
AUC0-t Of Danicopan Prototype PIC 1 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
Cmax Of Danicopan Prototype PIC 1 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
Time to maximum observed plasma concentration (Tmax) Of Danicopan Prototype PIC 1 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
Relative Bioavailability Of Danicopan Prototype PIC 2 Formulation And Tablet Formulation
Up to 72 hours postdose

The relative bioavailability of the PIC 2 formulation versus the tablet formulation will be measured by the ratio of select PK parameters: Cmax, AUC0-t, and AUC0-inf.

AUC0-inf Of Danicopan Prototype PIC 2 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
AUC0-t Of Danicopan Prototype PIC 2 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
Cmax Of Danicopan Prototype PIC 2 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
Tmax Of Danicopan Prototype PIC 2 Formulation Under Both Fed And Fasted Conditions
Up to 72 hours postdose
Number Of Participants With Treatment-Emergent Adverse Events
Day 1 (after first dose) through safety follow-up (10 +/- 2 days after last dose)
Area Under The Concentration Versus Time Curve (AUC) Of Danicopan In Both Fed And Fasted States
up to 72 hours postdose
Maximum Observed Concentration (Cmax) Of Danicopan In Both Fed And Fasted States
up to 72 hours postdose
Time To Maximum Observed Concentration (Tmax) Of Danicopan In Both Fed And Fasted States
up to 72 hours postdose
Dose Proportionality Of Danicopan In Fed State Assessed by AUC
up to 72 hours postdose
Dose Proportionality Of Danicopan In Fed State Assessed by Cmax
up to 72 hours postdose
Area Under The Concentration Versus Time Curve From Time 0 To The Last Measurable Concentration (AUC0-t) Of Danicopan Under Both Fed And Fasted Conditions In Healthy Young Adults
Up to 72 hours postdose
Area Under The Concentration Versus Time Curve From Time 0 Extrapolated To Infinity (AUC0-inf) Of Danicopan Under Both Fed And Fasted Conditions In Healthy Young Adults
Up to 72 hours postdose
Maximum Observed Concentration (Cmax) Of Danicopan Under Both Fed And Fasted Conditions in Healthy Young Adults
Up to 72 hours postdose
Time To Maximum Observed Concentration (Tmax) Of Danicopan Under Both Fed And Fasted Conditions in Healthy Young Adults
Up to 72 hours postdose
AUC0-t Of Danicopan Under Fed Conditions In Healthy Elderly Males
Up to 72 hours postdose
AUC0-inf Of Danicopan Under Fed Conditions In Healthy Elderly Males
Up to 72 hours postdose
Cmax Of Danicopan Under Fed Conditions In Healthy Elderly Males
Up to 72 hours postdose
Tmax Of Danicopan Under Fed Conditions In Healthy Elderly Males
Up to 72 hours postdose
Part 1: Area Under The Concentration Versus Time Curve From Time 0 Extrapolated To Infinity (AUC0-inf) Of Single-dose Warfarin Under Multiple Doses Of Danicopan
Up to 168 hours postdose
Part 1: Maximum Observed Concentration (Cmax) Of Single-dose Warfarin Under Multiple Doses Of Danicopan
Up to 168 hours postdose
Part 1: Time To Maximum Observed Concentration (Tmax) Of Single-dose Warfarin Under Multiple Doses Of Danicopan
Up to 168 hours postdose
Part 2: AUC0-inf Of Single-dose Bupropion Under Multiple Doses Of Danicopan
Up to 96 hours postdose
Part 2: Cmax Of Single-dose Bupropion Under Multiple Doses Of Danicopan
Up to 96 hours postdose
Part 2: Tmax Of Single-dose Bupropion Under Multiple Doses Of Danicopan
Up to 96 hours postdose
Part 3: AUC0-inf Of Single-dose EE/NET Under Multiple Doses Of Danicopan
Up to 96 hours postdose
Part 3: Cmax Of Single-dose EE/NET Under Multiple Doses Of Danicopan
Up to 96 hours postdose
Part 3: Tmax Of Single-dose EE/NET Under Multiple Doses Of Danicopan
Up to 96 hours postdose
Part 1: Cyclosporine Maximum Observed Concentration (Cmax) Following Single-dose Cyclosporine Alone Versus In The Presence Of Steady-state Danicopan
Up to 72 hours postdose
Part 1: Cyclosporine Time To Reach The Maximum Observed Concentration (Tmax) Following Single-dose Cyclosporine Alone Versus In The Presence Of Steady-state Danicopan
Up to 72 hours postdose
Part 1: Cyclosporine Area Under The Concentration-time Curve From Time 0 Extrapolated To Infinity (AUC0-inf) Following Single-dose Cyclosporine Alone Versus In The Presence Of Steady-state Danicopan
Up to 72 hours postdose
Part 2: Tacrolimus Cmax Following Single-dose Tacrolimus Alone Versus In The Presence Of Steady-state Danicopan
Up to 144 hours postdose
Part 2: Tacrolimus Tmax Following Single-dose Tacrolimus Alone Versus In The Presence Of Steady-state Danicopan
Up to 144 hours postdose
Part 2: Tacrolimus AUC0-inf Following Single-dose Tacrolimus Alone Versus In The Presence Of Steady-state Danicopan
Up to 144 hours postdose
Part 3: Steady-state Omeprazole Cmax Following Multiple-dose Omeprazole Alone Versus In The Presence Of Steady-state Danicopan
Up to 24 hours postdose
Part 3: Steady-state Omeprazole Tmax Following Multiple-dose Omeprazole Alone Versus In The Presence Of Steady-state Danicopan
Up to 24 hours postdose
Part 3: Steady-state Omeprazole Area Under The Concentration-time Curve From Time 0 To The 24-hour Time Point (AUC0-24) Following Multiple-dose Omeprazole Alone Versus In The Presence Of Steady-state Danicopan
Up to 24 hours postdose
Part 3: Steady-state Danicopan Cmax Alone Versus In The Presence Of Multiple-dose Omeprazole
Up to 8 hours postdose
Part 3: Steady-state Danicopan Tmax Alone Versus In The Presence Of Multiple-dose Omeprazole
Up to 8 hours postdose
Part 3: Steady-state Danicopan Area Under The Concentration-time Curve From Time 0 To The 8-hour Time Point (AUC0-8) Alone Versus In The Presence Of Multiple-dose Omeprazole
Up to 8 hours postdose
Part 3: Steady-state Danicopan Cmax Alone Versus In The Presence Of Single-dose Calcium Carbonate Or Aluminum/Magnesium Hydroxide/Simethicone
Up to 8 hours postdose
Part 3: Steady-state Danicopan Tmax Alone Versus In The Presence Of Single-dose Calcium Carbonate Or Aluminum/Magnesium Hydroxide/Simethicone
Up to 8 hours postdose
Part 3: Steady-state Danicopan AUC0-8 Alone Versus In The Presence Of Single-dose Calcium Carbonate Or Aluminum/Magnesium Hydroxide/Simethicone
Up to 8 hours postdose
Placebo-corrected Change From Baseline In QTc Intervals (ddQTc) For Danicopan
Pre-dose through 24 hours post-dose
Area Under The Plasma Concentration Versus Time Curve From Time 0 Extrapolated To Infinity (AUC0-inf) Of Danicopan
Up to 72 hours postdose
Area Under The Plasma Concentration Versus Time Curve From Time 0 To The Last Measurable Concentration (AUC0-t) Of Danicopan
Up to 72 hours postdose
Maximum Observed Plasma Concentration (Cmax) Of Danicopan
Up to 72 hours postdose
Time To Maximum Observed Plasma Concentration (Tmax) Of Danicopan
Up to 72 hours postdose
Participants With Treatment-emergent Adverse Events
Day 1 through Day 10 (+/- 2 days)
Mean Cumulative Percentages Of Total Radioactivity Recovered In Urine And Feces Following A Single Oral Dose Of [14C]-Danicopan
Up to 96 hours postdose or maximum of 216 hours postdose for extended collection period
Whole Blood And Plasma Pharmacokinetics (PK) Of Total Radioactivity After A Single Oral Dose Of [14C]-Danicopan: Area Under The Concentration-time Curve From Time 0 To The Time Of Last Quantifiable Concentration (AUC0-t)
Up to 96 hours postdose or maximum of 216 hours postdose for extended collection period
Whole Blood And Plasma PK Of Total Radioactivity After A Single Oral Dose Of [14C]-Danicopan: Area Under The Concentration-time Curve Extrapolated to Infinity (AUC0-inf)
Up to 96 hours postdose or maximum of 216 hours postdose for extended collection period
Whole Blood And Plasma PK Of Total Radioactivity After A Single Oral Dose Of [14C]-Danicopan: Maximum Observed Concentration (Cmax)
Up to 96 hours postdose or maximum of 216 hours postdose for extended collection period
Whole Blood And Plasma PK Of Total Radioactivity After A Single Oral Dose Of [14C]-Danicopan: Time To Maximum Observed Concentration (Tmax)
Up to 96 hours postdose or maximum of 216 hours postdose for extended collection period
Plasma PK Of Danicopan After A Single Oral Dose Of [14C]-Danicopan: AUC0-t
Up to 96 hours postdose
Plasma PK Of Danicopan After A Single Oral Dose Of [14C]-Danicopan: AUC0-inf
Up to 96 hours postdose
Plasma PK Of Danicopan After A Single Oral Dose Of [14C]-Danicopan: Cmax
Up to 96 hours postdose
Plasma PK Of Danicopan After A Single Oral Dose Of [14C]-Danicopan: Tmax
Up to 96 hours postdose
[14C]-Danicopan Metabolites In Plasma, Urine, And Feces
Up to 96 hours postdose or maximum of 216 hours postdose for extended collection period
Part 1: Midazolam Area Under The Plasma Concentration-time Curve From Time 0 To The Time Of The Last Observed Non-zero Concentration (AUC0-t) Following Single-dose Midazolam Alone Versus In The Presence of Steady-state Danicopan
Up to 24 hours postdose
Part 1: Midazolam Area Under The Plasma Concentration-time Curve From Time 0 Extrapolated To Infinity (AUC0-inf) Following Single-dose Midazolam Alone Versus In The Presence of Steady-state Danicopan
Up to 24 hours postdose
Part 1: Midazolam Maximum Observed Plasma Concentration (Cmax) Following Single-dose Midazolam Alone Versus In The Presence of Steady-state Danicopan
Up to 24 hours postdose
Part 1: Midazolam Time To Reach Maximum Observed Plasma Concentration (Tmax) Following Single-dose Midazolam Alone Versus In The Presence of Steady-state Danicopan
Up to 24 hours postdose
Part 2: Fexofenadine AUC0-t Following Single-dose Fexofenadine Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 2: Fexofenadine AUC0-inf Following Single-dose Fexofenadine Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 2: Fexofenadine Cmax Following Single-dose Fexofenadine Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 2: Fexofenadine Tmax Following Single-dose Fexofenadine Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 3: Mycophenolic Acid (MPA) and Mycophenolic Acid Glucuronide (MPAG) AUC0-t Following Single-dose Mycophenolate Mofetil (MMF) Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 3: MPA and MPAG AUC0-inf Following Single-dose MMF Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 3: MPA and MPAG Cmax Following Single-dose MMF Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
Part 3: MPA and MPAG Tmax Following Single-dose MMF Alone Versus In The Presence of Steady-state Danicopan
Up to 72 hours postdose
PK: Maximum Plasma Concentration (Cmax) Of Danicopan After Treatment With Each Of The Three Formulations
Up to 96 hours postdose
PK: Time To Reach The Maximum Plasma Concentration (Tmax) Of Danicopan After Treatment With Each Of The Three Formulations
Up to 96 hours postdose
PK: Area Under The Plasma Concentration-time Curve Extrapolated To Infinity (AUC0-Inf) Of Danicopan After Treatment With Each Of The Three Formulations
Up to 96 hours postdose
Incidence Of Serious Adverse Events, Grade 3 Or 4 Adverse Events (AEs), AEs Leading To Discontinuation, And Clinically Significant Laboratory Abnormalities And Electrocardiogram Abnormalities
Day 1 through Day 42

Secondary Endpoints

Maximum Plasma Concentration (Cmax) of Danicopan
Day 1 up to Week 12
Number of Participants With Transfusion Avoidance Through Weeks 12 and 24
Weeks 12 and 24
Change From Baseline in Absolute Reticulocyte Count at Weeks 12 and 24
Baseline, Weeks 12 and 24
Unlock Study Endpoints

Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
DanicopanEXPERIMENTALParticipants will receive a 12-week weight-based open-label treatment period and up to 1 year open-label long term extension period.
Danicopan + C5 InhibitorEXPERIMENTALParticipants will receive danicopan, in addition to their C5 inhibitor therapy, for 24 weeks (12 weeks in Treatment Period 1, followed by 12 weeks in Treatment Period 2).
Placebo + C5 InhibitorPLACEBO_COMPARATORParticipants will receive placebo, in addition to their C5 inhibitor therapy, for 12 weeks during Treatment Period 1. At Week 12, participants randomized to receive placebo will be switched to danicopan for an additional 12 weeks (Treatment Period 2).
Danicopan (Double-blind Treatment Period), Followed by Danicopan (Open-label Extension Period)ACTIVE_COMPARATORDanicopan was administered at a starting dose of 100 milligrams (mg) 3 times daily (TID) for the first 2 weeks, then dosage was to be increased to 200 mg TID for the remainder of the 6-month treatment period. All participants who completed the double-blind treatment period were enrolled in the open-label extension period and were to receive danicopan 200 mg TID.
Placebo (Double-blind Treatment Period), Followed by Danicopan (Open-label Extension Period)PLACEBO_COMPARATORPlacebo was administered TID during the 6-month treatment period. All participants who completed the double-blind treatment period were enrolled in the open-label extension period and were to receive danicopan 200 mg TID.
Group 1: 100 mg Danicopan TID + EculizumabEXPERIMENTALStarting dose of 100 mg danicopan TID in combination with eculizumab.
Group 2: Initial dose 100 or 150 mg Danicopan TID + EculizumabEXPERIMENTALStarting dose of 100 or 150 mg danicopan TID in combination with eculizumab.
Group 3: Initial dose of 100, 150, or 200 mg Danicopan TID + EculizumabEXPERIMENTALStarting dose of 100, 150, or 200 mg danicopan TID in combination with eculizumab.
Group 4: Optimal Dose of Danicopan TID + EculizumabEXPERIMENTALOptimal dose (starting dose of either 100, 150, or 200 mg, as determined from Groups 1-3) of danicopan TID in combination with eculizumab.
Group 1: Danicopan 100 mg TID (Sentinel)EXPERIMENTALAll participants received 100 milligrams (mg) of danicopan three times per day (TID) during the Treatment Period.
Group 2: Danicopan up to 200 mg TIDEXPERIMENTALAll participants received not more than 200 mg of danicopan TID depending on the available safety, pharmacokinetic, and pharmacodynamic data from Group 1 (Sentinel) during the Treatment Period.
Part 1: Sequence 1EXPERIMENTALParticipants will receive danicopan once each period as a single oral dose under fasted or fed conditions as follows: Period 1: Danicopan as the PIC 1 formulation under fed conditions. Period 2: Danicopan as the PIC 1 formulation under fasted conditions. Period 3: Danicopan as a tablet under fed conditions. There will be a washout period of at least 5 days between each danicopan dosing.
Part 1: Sequence 2EXPERIMENTALParticipants will receive danicopan once each period as a single oral dose under fasted or fed conditions as follows: Period 1: Danicopan as the PIC 1 formulation under fasted conditions. Period 2: Danicopan as a tablet under fed conditions. Period 3: Danicopan as the PIC 1 formulation under fed conditions. There will be a washout period of at least 5 days between each danicopan dosing.
Part 1: Sequence 3EXPERIMENTALParticipants will receive danicopan once each period as a single oral dose under fasted or fed conditions as follows: Period 1: Danicopan as a tablet under fed conditions. Period 2: Danicopan as the PIC 1 formulation under fed conditions. Period 3: Danicopan as the PIC 1 formulation under fasted conditions. There will be a washout period of at least 5 days between each danicopan dosing.
Part 2: Sequence 1EXPERIMENTALParticipants will receive danicopan once each period as a single oral dose under fasted or fed conditions as follows: Period 1: Danicopan as the PIC 2 formulation under fed conditions. Period 2: Danicopan as the PIC 2 formulation under fasted conditions. Period 3: Danicopan as a tablet under fed conditions. There will be a washout period of at least 5 days between each danicopan dosing.
Part 2: Sequence 2EXPERIMENTALParticipants will receive danicopan once each period as a single oral dose under fasted or fed conditions as follows: Period 1: Danicopan as the PIC 2 formulation under fasted conditions. Period 2: Danicopan as a tablet under fed conditions. Period 3: Danicopan as the PIC 2 formulation under fed conditions. There will be a washout period of at least 5 days between each danicopan dosing.
Part 2: Sequence 3EXPERIMENTALParticipants will receive danicopan once each period as a single oral dose under fasted or fed conditions as follows: Period 1: Danicopan as a tablet under fed conditions. Period 2: Danicopan as the PIC 2 formulation under fed conditions. Period 3: Danicopan as the PIC 2 formulation under fasted conditions. There will be a washout period of at least 5 days between each danicopan dosing.
Danicopan 200 mg FastedEXPERIMENTALFasting participants will receive a single dose of 200 mg danicopan.
Danicopan 200 mg FedEXPERIMENTALFed participants will receive a single dose of 200 mg danicopan.
Danicopan 400 mg FedEXPERIMENTALFed participants will receive a single dose of 400 mg danicopan.
Part 2EXPERIMENTALHealthy, elderly, male participants will receive a single dose of danicopan under fed conditions.
Part 1: Danicopan and WarfarinEXPERIMENTALPeriod 1: Participants received a single dose of warfarin. Period 2: Participants received danicopan three times daily, in addition to coadministration with a single dose of warfarin. Scheduled pharmacokinetics (PK) and pharmacodynamics samples were collected, with a washout period of at least 14 days between the dose of warfarin in Period 1 and the first dose of danicopan in Period 2.
Part 2: Danicopan and BupropionEXPERIMENTALPeriod 1: Participants received a single dose of bupropion. Period 2: Participants received danicopan three times daily, in addition to coadministration with a single dose of bupropion. Scheduled PK samples were collected, with a washout period of at least 7 days between the dose of bupropion in Period 1 and the first dose of danicopan in Period 2.
Part 3: Danicopan and EE/NETEXPERIMENTALPeriod 1: Participants received a single dose of EE/NET. Period 2: Participants received danicopan three times daily, in addition to coadministration with a single dose of EE/NET. Scheduled PK samples were collected, with a washout period of at least 7 days between the dose of EE/NET in Period 1 and the first dose of danicopan in Period 2.
Part 1: Danicopan plus CyclosporineEXPERIMENTALParticipants (N=14) received danicopan and cyclosporine in a fixed sequence over 2 periods: Treatment A (Period 1): 300 milligrams (mg) cyclosporine administered on Day 1. Treatment B (Period 2): 200 mg danicopan administered 3 times daily (TID) on Days 1-7 with 300 mg cyclosporine coadministered on Day 5. There was a washout period of 3 days between the dose of cyclosporine in Period 1 and the first dose of danicopan in Period 2.
Part 2: Danicopan plus TacrolimusEXPERIMENTALParticipants (N=28) received danicopan and tacrolimus in a fixed sequence over 2 periods: Treatment C (Period 1): 2 mg tacrolimus administered on Day 1. Treatment D (Period 2): 200 mg danicopan administered TID on Days 1-10 with 2 mg tacrolimus coadministered on Day 5. There was a washout period of 7 days between the dose of tacrolimus in Period 1 and the first dose of danicopan in Period 2.
Part 3: Danicopan plus Antacids and OmeprazoleEXPERIMENTALParticipants (N=30) received danicopan, calcium carbonate, aluminum/magnesium hydroxide/simethicone, and omeprazole in fixed sequences over 2 periods: Treatment E1 (Period 1): 200 mg danicopan administered TID on Days 1-4. Treatment E2 (Period 1): 200 mg danicopan coadministered with 1 gram calcium carbonate on Day 5. Treatment F1 (Period 1): 200 mg danicopan administered TID on Days 1-4. Treatment F2 (Period 1): 200 mg danicopan coadministered with 200 mg aluminum hydroxide/200 magnesium hydroxide/25 mg simethicone on Day 5. Note: Participants were randomized in a 1:1 ratio to receive either Treatment E2 or F2 coadministered with danicopan on Day 5. Treatment G1 (Period 2): 40 mg omeprazole administered once daily (QD) on Days 1-4. Treatment G2 (Period 2): 40 mg omeprazole administered QD with 200 mg danicopan administered orally TID on Days 5-8. There was a washout period of 2 days between the last dose of danicopan in Period 1 and the first dose of omeprazole in Period 2.
Treatment Arm (ABC)EXPERIMENTALTreatment Sequence ABC - Participants received all 3 doses of danicopan in ascending fashion over 3 periods: Treatment A (Period 1): Danicopan 400 milligrams (mg) and moxifloxacin-matching placebo. Treatment B (Period 2): Danicopan 800 mg and moxifloxacin-matching placebo. Treatment C (Period 3): Danicopan 1200 mg and moxifloxacin-matching placebo.
Control Arm (EFG and IJK)PLACEBO_COMPARATORParticipants received 1 of 2 treatment sequences (Treatment Sequence EFG or Treatment Sequence IJK) over 3 periods: Treatment E (Period 1): Danicopan-matching placebo (400 mg) and moxifloxacin-matching placebo. Treatment F (Period 2): Danicopan-matching placebo (800 mg) and moxifloxacin 400 mg. Treatment G (Period 3): Danicopan-matching placebo (1200 mg) and moxifloxacin-matching placebo. Treatment I (Period 1): Danicopan-matching placebo (400 mg) and moxifloxacin 400 mg. Treatment J (Period 2): Danicopan-matching placebo (800 mg) and moxifloxacin-matching placebo. Treatment K (Period 3): Danicopan-matching placebo (1200 mg) and moxifloxacin 400 mg.
Part 1: Healthy MatchEXPERIMENTALSingle 200-milligram (mg) dose of danicopan on Day 1 in healthy participants (matched control group with normal hepatic function).
Part 1: Moderate HIEXPERIMENTALSingle 200-mg dose of danicopan on Day 1 in participants with moderate HI.
Group 1: Matched Control Group Of Healthy ParticipantsEXPERIMENTALParticipants received a single 200-milligram (mg) treatment on Day 1.
Group 2: Severe RI And Not On DialysisEXPERIMENTALParticipants received a single 200-mg treatment on Day 1.
[14C]-DanicopanEXPERIMENTALParticipants were administered a single oral dose of danicopan between 151 and 154 mg (nominal dose of 150 mg), providing approximately 100 μCi of \[14C\] radiolabel in the form of \[14C\]-danicopan.
Part 1: Danicopan and MidazolamEXPERIMENTALPeriod 1: Participants received a single dose of midazolam. Period 2: Participants received multiple doses of danicopan, in addition to coadministration with a single dose of midazolam. Scheduled pharmacokinetics (PK) blood samples were collected, with a washout period of at least 3 days between the dose in Period 1 and the first dose in Period 2.
Part 2: Danicopan and FexofenadineEXPERIMENTALPeriod 1: Participants received a single dose of fexofenadine. Period 2: Participants received multiple doses of danicopan, in addition to coadministration with a single dose of fexofenadine. Scheduled PK blood samples were collected, with a washout period of at least 3 days between the dose in Period 1 and the first dose in Period 2.
Part 3: Danicopan and MMFEXPERIMENTALPeriod 1: Participants received a single dose of MMF. Period 2: Participants received multiple doses of danicopan, in addition to coadministration with a single dose of MMF. Scheduled PK blood samples were collected, with a washout period of at least 3 days between the dose in Period 1 and the first dose in Period 2.
Group 1: Sequence 1EXPERIMENTALParticipants received danicopan once each period as a single dose under fasted or fed (medium-fat meal) conditions as follows: Period 1: Danicopan as an LFC under fasted conditions. Period 2: Danicopan as a tablet under fed (medium-fat meal) conditions. Period 3: Danicopan as a tablet under fasted conditions. There was a washout period of at least 4 days (96 hours) between each danicopan dosing.
Group 1: Sequence 2EXPERIMENTALParticipants received danicopan once each period as a single dose under fasted or fed (medium-fat meal) conditions as follows: Period 1: Danicopan as a tablet under fed (medium-fat meal) conditions. Period 2: Danicopan as a tablet under fasted conditions. Period 3: Danicopan as an LFC under fasted conditions. There was a washout period of at least 4 days (96 hours) between each danicopan dosing.
Group 1: Sequence 3EXPERIMENTALParticipants received danicopan once each period as a single dose under fasted or fed (medium-fat meal) conditions as follows: Period 1: Danicopan as a tablet under fasted conditions. Period 2: Danicopan as an LFC under fasted conditions. Period 3: Danicopan as a tablet under fed (medium-fat meal) conditions. There was a washout period of at least 4 days (96 hours) between each danicopan dosing.
Group 2: Sequence 1EXPERIMENTALParticipants received danicopan once each period as a single dose under fasted conditions as follows: Period 1: Danicopan as an LFC under fasted conditions. Period 2: Danicopan as a softgel capsule under fasted conditions. There was a washout period of at least 4 days (96 hours) between each danicopan dosing.
Group 2: Sequence 2EXPERIMENTALParticipants received danicopan once each period as a single dose under fasted conditions as follows: Period 1: Danicopan as a softgel capsule under fasted conditions. Period 2: Danicopan as an LFC under fasted conditions. There was a washout period of at least 4 days (96 hours) between each danicopan dosing.
Cohort 1: 200 mgEXPERIMENTALAll participants under fasted conditions received 200 mg of danicopan or placebo twice daily (BID) over a 14-day period.
Cohort 2: 500 mgEXPERIMENTALAll participants under fasted conditions received 500 mg of danicopan or placebo BID over a 14-day period.
Cohort 3: 800 mgEXPERIMENTALAll participants under fasted conditions received 800 mg of danicopan or placebo BID over a 14-day period.
Cohort 4: 75 mgEXPERIMENTALAll participants under fasted conditions received 75 mg of danicopan or placebo thrice daily (TID) over a 7-day period.
Group 1: 200 mgEXPERIMENTALAll participants (fasted) received either 200 mg of danicopan as a single oral dose or dose-matched placebo.
Group 2: 600 mgEXPERIMENTALAll participants (fasted) received either 600 mg of danicopan as a single oral dose or dose-matched placebo.
Group 3: 1200 mgEXPERIMENTALAll participants (fasted) received either 1200 mg of danicopan as a single oral dose or dose-matched placebo.
Group 4: 2400 mgEXPERIMENTALAll participants (fasted) received either 2400 mg of danicopan administered as 2 single doses of 1200 mg each, 12 hours apart, or dose-matched placebo.
Group 5: 1200 mgEXPERIMENTALAll participants (fed) received either 1200 mg of danicopan as a single oral dose or dose-matched placebo.

Interventions

NameTypeDescription
DanicopanDRUGParticipants will receive danicopan on a weight-based dosing regimen.
PlaceboDRUGOral tablet
C5 InhibitorDRUGParticipants will continue to receive their ongoing C5 inhibitor (eculizumab or ravulizumab) therapy according to their usual dose and schedule.
EculizumabDRUGParticipants received intravenous eculizumab administered at the participant's usual dose and schedule.
Danicopan: Powder-In-Capsule 1DRUGDanicopan (200 milligrams) will be administered orally on Day 1.
Danicopan: Powder-In-Capsule 2DRUGDanicopan (200 milligrams) will be administered orally on Day 1.
Danicopan: TabletDRUGDanicopan (200 milligrams) will be administered orally on Day 1.
WarfarinDRUGWarfarin was dosed as 2 x 10 mg and 1 x 5 mg warfarin sodium tablets (Coumadin or generic equivalent).
BupropionDRUGBupropion was dosed as Wellbutrin (or generic equivalent) as 1 x 100 mg tablet.
Ethinyl Estradiol/NorethindroneDRUGEE/NET (0.035 mg/1 mg) was dosed as Ortho-Novum-1/35 (or generic equivalent) fixed-dose combination tablets.
CyclosporineDRUGOral capsule.
TacrolimusDRUGOral capsule.
Calcium CarbonateDRUGChewable tablet.
Aluminum/Magnesium Hydroxide/SimethiconeDRUGChewable tablet.
OmeprazoleDRUGOral, delayed-release capsule.
Moxifloxacin-matching PlaceboDRUGMoxifloxacin-matching placebo was administered as a single oral dose.
Danicopan-matching placeboDRUGDanicopan-matching placebo was administered as a single oral dose.
MoxifloxacinDRUGMoxifloxacin 400 mg was administered as a single tablet oral dose.
[14C]-DanicopanDRUGLiquid-filled capsules.
MidazolamDRUGOral syrup.
FexofenadineDRUGOral tablet.
Mycophenolate MofetilDRUGOral tablet.
Danicopan - TabletDRUGOral tablet.
Danicopan - SoftgelDRUGOral softgel capsule.
Danicopan - LFCDRUGOral LFC.
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Eligibility Criteria

Age Range12 Years to 17 Years
SexALL
Healthy VolunteersNo
Study Sites4

Inclusion Criteria: * Confirmed diagnosis of PNH. * CS-EVH defined by: Anemia: Hgb ≤ 11.0 g/dL, and absolute reticulocyte count ≥ 100 × 109/L * Treated with ravulizumab or eculizumab for at least 12 weeks immediately preceding Day 1, the dose received should be stable during this period, and there ...

Countries:CanadaFranceUnited KingdomUnited StatesBrazilCzechiaGreeceIsraelItalyJapanMalaysiaPolandSouth KoreaSpainThailandGermanyNetherlandsTaiwanAustraliaBelgiumNew Zealand
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Recent Changes (Last 90 Days)

LOWJun 18, 2026NCT05389449primaryCompletionDate: changed
LOWJun 18, 2026NCT05389449primaryCompletionDate: changed
LOWJun 18, 2026NCT05389449primaryCompletionDate: changed

Frequently asked questions about Danicopan

What is Danicopan used for?

Danicopan is an investigational small molecule being developed for paroxysmal nocturnal hemoglobinuria (PNH), C3 glomerulopathy, and C3 glomerulonephritis. It is also studied in healthy volunteers and in hepatic impairment. Danicopan is in Phase 2 clinical development and is not yet approved by the FDA.

Who makes Danicopan?

Danicopan is being developed by AstraZeneca PLC, which trades under the ticker AZN. The company is conducting clinical trials of Danicopan across multiple indications, including paroxysmal nocturnal hemoglobinuria and C3 glomerulopathy.

What phase is Danicopan in?

Danicopan is in Phase 2 clinical development. It is an investigational drug and has not been approved by the FDA. The development program includes completed Phase 1 trials in healthy volunteers and ongoing studies in patients with paroxysmal nocturnal hemoglobinuria and C3 glomerulopathy.

What clinical trials is Danicopan in?

Danicopan has been studied in several clinical trials, including NCT04451434 in healthy Japanese participants, NCT04889677 and NCT04889690 in healthy adults, and NCT05109390, a drug interaction study with cyclosporine, tacrolimus, antacids, and omeprazole. These trials are all completed.

Is Danicopan the same as any other drug?

Danicopan is not known by any alternative names. It is a distinct investigational small molecule being developed by AstraZeneca for complement-mediated diseases such as paroxysmal nocturnal hemoglobinuria and C3 glomerulopathy.