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Danicopan

Phase 3FDA approved

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

Danicopan development status

FDA approval on record Mar 29, 2024 as Voydeya
Approval holderAlexion Pharms Inc
ApplicationNDA218037
Highest phase Phase 3
Registered trials 25 across 2 sponsors since Feb 2017

Label indication VOYDEYA is indicated as add-on therapy to ravulizumab or eculizumab for the treatment of extravascular hemolysis (EVH) in adults with paroxysmal nocturnal hemoglobinuria (PNH). VOYDEYA is a complement factor D inhibitor indicated as add-on therapy to ravulizumab or eculizumab for the treatment of extravascular hemolysis (EVH) in adults with paroxysmal nocturnal hemoglobinuria (PNH) ( 1 ).

Danicopan target and mechanism

Molecular targetCFD
Target classInhibitor
ModalitySmall molecule

Also known as [14C]-Danicopan, Danicopan - Tablet, Danicopan: Powder-In-Capsule 1, Danicopan:In- 1, ALXN2040, ACH-4471, ACH-0144471 (formerly), ACH-0144471

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials9
Total Enrollment237

FDA Designations

No designations recorded

Danicopan clinical trials

Danicopan · 9 trials · 10 indications

Phase 3 3Phase 2 5Phase 1 1
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 LDH Level at Week 25
Baseline, Week 25

Change from Baseline = Serum LDH levels at Week 25 - Baseline Serum LDH levels. Baseline was the baseline value from the primary Study ACH471-100.

Change From Baseline in Hgb Level in the Absence of RBC Transfusion at Week 25
Baseline, Week 25

Change from Baseline = Hgb levels at Week 25 - Baseline Hgb levels. Baseline was the baseline value from the primary Study ACH471-100.

Change From Baseline in Reticulocyte Counts at Week 25
Baseline, Week 25

Change from Baseline = reticulocyte count at Week 25 - Baseline reticulocyte count. Baseline was the baseline value from the primary Study ACH471-100.

Number of RBC Units Transfused
Baseline up to Week 169
Number of RBC Transfusion Instances
Baseline up to Week 169
Change From Baseline in PNH Clone Size at Week 25
Baseline, Week 25

The PNH clone size refers to the percentage of PNH-affected cells versus normal cells within the total cell population. Change from Baseline = PNH clone size at Week 25 - Baseline PNH clone size. Baseline was the baseline value from the primary Study ACH471-100.

Change From Baseline in AP Complement Functional Activity at Week 25
Baseline, Week 25

Serum AP functional activity was measured by the Wieslab functional immunoassay method. Change from Baseline = Serum AP functional activity at Week 25 - Baseline Serum AP functional activity. Baseline was the baseline value from the primary Study ACH471-100.

Change From Baseline in Free Hgb at Week 25
Baseline, Week 25

Change from Baseline = free Hgb at Week 25 - Baseline free Hgb. Baseline was the baseline value from the primary Study ACH471-100.

Number of Participants With Treatment-Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs), Grade 3 and Grade 4 Adverse Events (AEs), And AEs Leading To Discontinuation
Baseline up to 4.5 years

An AE was as any untoward medical occurrence associated with the use of a drug in humans, whether or not considered drug related. An SAE was an AE that met at least 1 of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization for the AE, persistent or significant disability/incapacity or substantial disruption of the ability to conduct normal life functions, congenital anomaly/birth defect (in the child of a participant who was exposed to the study drug), important medical event or reaction. The intensity of an AE was graded according to the Common Terminology Criteria for Adverse Events (CTCAE) Adverse Event Severity Grading Table. A summary of all Serious Adverse Events and Other Adverse Events (nonserious) regardless of causality is located in the 'Reported Adverse Events' Section.

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.

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

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
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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.
ACH-0144471EXPERIMENTALAll participants will receive ACH-0144471 during the treatment period.
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.

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.
ACH-0144471DRUGACH-0144471 will be administered to all participants enrolled in the study.
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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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Frequently asked questions about Danicopan

What is danicopan?

Danicopan is an investigational small molecule developed by AstraZeneca PLC (ticker AZN). It is being studied in nephrology and hematology indications, including C3 glomerulonephritis, C3 glomerulopathy, hepatic impairment, and paroxysmal nocturnal hemoglobinuria (PNH). It is a complement factor D inhibitor and is not yet approved.

What is danicopan used for?

Danicopan is being studied for paroxysmal nocturnal hemoglobinuria (PNH), including as an add-on to C5 inhibitors in patients with clinically significant extravascular hemolysis. It is also being evaluated in C3 glomerulonephritis, C3 glomerulopathy, and hepatic impairment. These uses remain investigational and are not approved.

What does danicopan target?

Danicopan targets complement factor D (CFD) and acts as an inhibitor. By inhibiting factor D, it is designed to modulate the alternative complement pathway, which is relevant to conditions such as PNH and C3 glomerulopathy where complement dysregulation plays a role.

Who makes danicopan?

Danicopan is developed by AstraZeneca PLC, which trades under the ticker AZN. AstraZeneca is the sponsor of the clinical trials evaluating danicopan across its studied indications.

What phase is danicopan in?

Danicopan is in Phase 2 development overall, with Phase 3 trials also conducted in paroxysmal nocturnal hemoglobinuria. It is investigational and not approved. Five trials are recorded in total, of which two are active and three are completed, with 194 participants enrolled across them.

What clinical trials is danicopan in?

Danicopan trials include NCT06449001, a recruiting Phase 3 study in pediatric PNH patients with extravascular hemolysis, and NCT05389449, an active Phase 3 long-term safety and efficacy study as an add-on to C5 inhibitors in PNH. Completed trials include NCT04469465 (ALPHA) in PNH and NCT03555539 in hepatic impairment.

Is danicopan the same as [14C]-Danicopan?

Yes, [14C]-Danicopan is an alternative name for danicopan, along with Danicopan - Tablet, Danicopan: Powder-In-Capsule 1, and Danicopan:In- 1. These refer to the same investigational compound developed by AstraZeneca.