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PF-06700841

Phase 3

Systemic Lupus Erythematosus | Small molecule | Immunology |Pfizer, Inc.|Trials Updated: May 19, 2026

PF-06700841 development status

Highest phase Phase 3 run by Priovant Therapeutics, Inc. (NCT05437263)
Phase scored for PFEPhase 2
Registered trials 17 across 3 sponsors since Nov 2016

PF-06700841 target and mechanism

ModalitySmall molecule

Also known as PF-06700841 cream, Brepocitinib

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials7
Total Enrollment1,564

FDA Designations

No designations recorded

PF-06700841 clinical trials

PF-06700841 · 7 trials · 7 indications

Phase 2 6Phase 1 1
NCT05076006Dual JAK1/TYK2 Inhibitor for Cicatricial AlopeciaCicatricial Alopecia
COMPLETED51 Analytics
NCT03963401A Study to Evaluate the Efficacy and Safety of PF-06700841 in Subjects With Active Psoriatic ArthritisPsoriatic Arthritis
COMPLETED219 Analytics
NCT03903822Dose Ranging Study to Assess Efficacy, Safety, Tolerability and Pharmacokinetics of PF-06700841 Topical Cream in Participants With Mild or Moderate Atopic DermatitisAtopic Dermatitis
COMPLETED292 Analytics
NCT03845517A DOSE-RANGING STUDY TO EVALUATE EFFICACY AND SAFETY OF PF-06700841 IN SYSTEMIC LUPUS ERYTHEMATOSUS (SLE)Systemic Lupus Erythematosus
COMPLETED350 Analytics
NCT03850483Dose Ranging Study To Assess Efficacy, Safety and Tolerability Of PF-06700841 Topical Cream In PsoriasisPsoriasis
COMPLETED344 Analytics
NCT02969018Study To Evaluate Safety And Efficacy Of PF-06700841 In Subjects With Moderate To Severe Plaque PsoriasisChronic Plaque Psoriasis
COMPLETED212 Analytics
PHASE2COMPLETED
Dual JAK1/TYK2 Inhibitor for Cicatricial Alopecia
Cicatricial AlopeciaUnlock trial analytics
PHASE2COMPLETED
A Study to Evaluate the Efficacy and Safety of PF-06700841 in Subjects With Active Psoriatic Arthritis
Psoriatic ArthritisUnlock trial analytics
PHASE2COMPLETED
Dose Ranging Study to Assess Efficacy, Safety, Tolerability and Pharmacokinetics of PF-06700841 Topical Cream in Participants With Mild or Moderate Atopic Dermatitis
Atopic DermatitisUnlock trial analytics
PHASE2COMPLETED
A DOSE-RANGING STUDY TO EVALUATE EFFICACY AND SAFETY OF PF-06700841 IN SYSTEMIC LUPUS ERYTHEMATOSUS (SLE)
Systemic Lupus ErythematosusUnlock trial analytics
PHASE2COMPLETED
Dose Ranging Study To Assess Efficacy, Safety and Tolerability Of PF-06700841 Topical Cream In Psoriasis
PsoriasisUnlock trial analytics
PHASE2COMPLETED
Study To Evaluate Safety And Efficacy Of PF-06700841 In Subjects With Moderate To Severe Plaque Psoriasis
Chronic Plaque PsoriasisUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of Participants With Treatment-Emergent Adverse Events
Week 48

The adverse event will be described and categorized as Treatment-emergent, Serious, abnormal in vital signals, and abnormal in laboratory parameters. Incidence and Severity of

Changes From Baseline in CCL5 Gene Expression Level in Response to PF-06700841
Baseline, Week 24 and Week 48

mRNA Levels of CCL5 gene expression in skin biopsies quantified by normalized Ct values obtained by quantitative real-time PCR assay, measured at baseline, week 24 and week 48. Changes are characterized by differences in Ct values from a specific time point (week 24 or week 48) to baseline.

Changes From Baseline in CXCR3(TGFB1) Gene Expression Level in Response to PF-06700841
Baseline, Week 24 and Week 48

mRNA Levels of CXCR3(TGFB1) gene expression in skin biopsies quantified by normalized Ct values obtained by quantitative real-time PCR assay, measured at baseline, week 24 and week 48. Changes are characterized by differences in Ct values from a specific time point (week 24 or week 48) to baseline.

Percentage of Participants Achieving an American College of Rheumatology 20 (ACR20) Response at Week 16
Week 16

ACR 20 was calculated as a ≥20% improvement in tender and swollen joint counts and ≥20% improvement in 3 of the 5 remaining ACR core set measures: patient pain assessment (a horizontal visual analog scale assessment of the patient's level of pain), patient global assessment (the patient's overall assessment of how the arthritis was doing by a visual analog scale), physician global assessment (a horizontal visual analog scale measure of the physician's assessment of the patient's current disease activity), patient self-assessed disability (a validated and reliable patient self-assessment instrument which measured physical functions in rheumatoid arthritis patients) and an acute-phase reactant (C-reactive protein level). The participants receiving placebo in the initial period (Day 1 - Week 16) were combined into a single placebo group, while those who received PF-06700841 (10 mg QD) in the initial period were combined into a single PF-06700841 10 mg QD group.

Percent Change From Baseline in Eczema Area and Severity Index (EASI) Total Score at Week 6: Multiple Imputation
Baseline, Week 6

EASI evaluates severity of participant's AD (excluded scalp, palms, soles) based on severity of AD clinical signs and % of body surface area (BSA) affected. Severity of clinical signs of AD (erythema, induration/papulation, excoriation and lichenification) scored separately for each of 4 body regions(head and neck, upper limbs, trunk \[including axillae and groin\] and lower limbs \[including buttocks\]) on4-point scale: 0= absent; 1= mild; 2= moderate; 3= severe. EASI area score was based upon % BSA with AD in each 4 body region: 0 (0%), 1 (\>0 to \<10%), 2 (10 to \<30%), 3 (30 to \<50%), 4 (50 to \<70%), 5 (70 to \<90%) and 6 (90 to 100%). Total EASI score =0.1\*Ah\*(Eh+Ih+Exh+Lh) + 0.2\*Au\*(Eu+Iu+ExU+Lu) + 0.3\*At\*(Et+It+Ext+Lt) + 0.4\*Al\*(El+Il+Exl+Ll); A = EASI area score; E = erythema; I = induration/papulation; Ex = excoriation; L = lichenification; h = head and neck; u = upper limbs; t = trunk; l = lower limbs. Total EASI score ranged from 0.0 to 72.0, higher scores = greater severity of AD.

Percentage of Participants Achieving SLE Responder Index (SRI) Change of 4 (SRI-4) at Week 52
Week 52

SRI-4 components included Systemic Lupus Erythematosus Disease Activity Index 2000 (SLEDAI-2K), British Isles Lupus Assessment Group (BILAG) 2004 and Physician's Global Assessment (PhGA). Participants were classified as SRI-4 responders, if they met all of the following criteria compared with baseline: 1) greater than or equal to (\>=) 4 point reduction in SLEDAI-2K score; 2) no new BILAG A organ domain score or 2 new BILAG B organ domain scores; 3) no worsening (less than \[\<\] 0.3 point increase) in PhGA score. SLEDAI-2K: assesses improvement in disease activity (range: 0 to 105; higher score = higher severity). BILAG: assesses disease extent, severity in individual organ system (range: A \[severe\] to E \[no disease\]; higher score = less severity). PhGA: assesses worsening in participant's general health status (range: 0 \[none\] to 3 \[severe\]; higher score = higher severity).

Change From Baseline in Psoriasis Area and Severity Index (PASI) Score at Week 12
Baseline, Week 12

The Psoriasis Area and Severity Index (PASI) score (0-72, with higher score representing greater severity) is a measurement of the severity and extent of psoriasis. The four regions of the body parts are head (10%), arms (20%), trunk (30%) and legs (40%). In each region, the area is expressed as a score of 0 (nothing), 1 (1-9%), 2 (10-29%), 3 (30-49%), 4 (50-69%), 5 (70-89%) or 6 (90-100%). Within each area, the degree of severity for erythema, induration and scaling are estimated between 0 and 4, with 4 being the highest severity. The final score combines disease severity and effected body surface area (BSA) from for four regions using the formula PASI =0.1Ah(Eh + Ih + Sh) + 0.2Au(Eu + Iu + Su) + 0.3At(Et + It + St) + 0.4Al(El + Il + Sl) where A = Area Score; E = erythema; I =induration; S = scaling; h = head; u = upper limbs; t = trunk; l = lower limbs.

Single Ascending Dose (SAD) Cohort: Change From Baseline in Blood Pressure at Day 1
Baseline, 24 hours post-dose on Day 1
Multiple Ascending Dose (MAD) Cohort: Change From Baseline in Blood Pressure at Day 10
Baseline, 16 hours post-dose on Day 10
Multiple Ascending Dose (MAD) Psoriasis Cohort: Change From Baseline in Blood Pressure at Day 28
Baseline, 16 hours post-dose on Day 28
Single Ascending Dose (SAD) Cohort: Change From Baseline in Pulse Rate at Day 1
Baseline, 24 hours post-dose on Day 1
Multiple Ascending Dose (MAD) Cohort: Change From Baseline in Pulse Rate at Day 10
Baseline, 16 hours post-dose on Day 10
Multiple Ascending Dose (MAD) Psoriasis Cohort: Change From Baseline in Pulse Rate at Day 28
Baseline, 16 hours post-dose on Day 28
Single Ascending Dose (SAD) Cohort: Change From Baseline in Oral Temperature at Day 1
Baseline, 24 hours post-dose on Day 1
Multiple Ascending Dose (MAD) Cohort: Change From Baseline in Oral Temperature at Day 10
Baseline, 16 hours post-dose on Day 10
Multiple Ascending Dose (MAD) Psoriasis Cohort: Change From Baseline in Oral Temperature at Day 28
Baseline, 16 hours post-dose on Day 28
Number of Participants With Change From Baseline in Physical Examinations
SAD Cohort: Baseline up to Day 8, MAD Cohort: Baseline up to Day 28, MAD Psoriasis Cohort: Baseline up to Day 56, Food Effect Cohort: Baseline up to Day 37

Physical examinations included head, ears, eyes, nose, mouth, skin, heart and lung examinations, lymph nodes, gastrointestinal, musculoskeletal, and neurological systems.

Single Ascending Dose (SAD) Cohort: Change From Baseline in 12-Lead Electrocardiogram (ECG) Parameters (PR Interval, QRS Complex, QT Interval, QTC Interval) at Day 1
Baseline, 24 hours post-dose on Day 1
Multiple Ascending Dose (MAD) Cohort: Change From Baseline in 12-Lead Electrocardiogram (ECG) Parameters (PR Interval, QRS Complex, QT Interval, QTC Interval) at Day 10
Baseline, 16 hours post-dose on Day 10
Multiple Ascending Dose (MAD) Psoriasis Cohort: Change From Baseline in 12-Lead Electrocardiogram (ECG) Parameters (PR Interval, QRS Complex, QT Interval, QTC Interval) at Day 28
Baseline, 16 hours post-dose on Day 28
Single Ascending Dose (SAD) Cohort: Change From Baseline in Heart Rate at Day 1
Baseline, 24 hours post-dose on Day 1
Multiple Ascending Dose (MAD) Cohort: Change From Baseline in Heart Rate at Day 10
Baseline, 16 hours post-dose on Day 10
Multiple Ascending Dose (MAD) Psoriasis Cohort: Change From Baseline in Heart Rate at Day 28
Baseline, 16 hours post-dose on Day 28
Number of Participants With Treatment-Emergent Adverse Events (AEs), Serious Adverse Events (SAEs) and Discontinuation Due to AEs
SAD Cohort: Baseline up to Day 8, MAD Cohort: Baseline up to Day 28, MAD Psoriasis Cohort: Baseline up to Day 56, Food Effect Cohort: Baseline up to Day 37

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; Initial or prolonged inpatient hospitalization; life threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent were events between first dose of study drug up to the end of study (up to Day 8 in SAD cohort, Day 28 in MAD cohort, Day 56 in MAD Psoriasis cohort, Day 37 in Food effect cohort), that were absent before treatment or that worsened relative to pretreatment state. AEs included both SAE and non-SAE.

Number of Adverse Events (AEs) According to Severity
SAD Cohort: Baseline up to Day 8, MAD Cohort: Baseline up to Day 28, MAD Psoriasis Cohort: Baseline up to Day 56, Food Effect Cohort: Baseline up to Day 37

An AE was any untoward medical occurrence attributed to study drug in a participant who received study drug. AEs were classified according to the severity in 3 categories a) mild - AEs does not interfere with participant's usual function b) moderate - AEs interferes to some extent with participant's usual function c) severe - AEs interferes significantly with participant's usual function.

Number of Participants With Laboratory Abnormalities
SAD Cohort: Baseline up to Day 8, MAD Cohort: Baseline up to Day 28, MAD Psoriasis Cohort: Baseline up to Day 56, Food Effect Cohort: Baseline up to Day 37

Criteria for abnormality:hematology: hemoglobin, hematocrit, red blood cell count: less than(\<) 0.8\*lower limit of normal (LLN); mean corpuscular volume; mean corpuscular hemoglobin, mean corpuscular hemoglobin concentration: \<0.9\*LLN,\>1.1\*upper limit of normal (ULN); platelets: \<0.5\*LLN,\>1.75\*ULN, white blood cell count: \<0.6\*LLN, \>1.5\*ULN; lymphocytes, total neutrophils: \<0.8\*LLN, \>1.2\*ULN; eosinophils, basophils, monocytes: \>1.2\*ULN; coagulation: activated partial thromboplastin time, prothrombin, prothrombin international ratio: \>1.1\*ULN; liver function: bilirubin: \>1.5\*ULN; aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase: \>3.0\*ULN; protein, albumin: \<0.8\*LLN\>\</0\>1.2\*ULN; renal function:blood urea nitrogen,creatinine: \>1.3\*ULN; uric acid: \>1.2\*ULN; electrolytes: sodium, potassium, chloride, calcium, bicarbonate: \<0.9\*LLN,\>1.1\*ULN; urinalysis: pH\<4.5, \>8; glucose, protein, blood, ketones, urobilinogen, bilirubin, nitrite; Other(glucose: \<0.6\*LLN,\>1.5\*ULN)

Single Ascending Dose (SAD) Cohort: Change From Baseline in Creatinine Clearance at Day 1
Baseline, 24 hours post-dose on Day 1

Creatinine clearance is a measure of kidney function. Creatinine clearance is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time.

Multiple Ascending Dose (MAD) and MAD Psoriasis Cohort: Change From Baseline in Creatinine Clearance at Day 10
Baseline, 16 hours post-dose on Day 10

Creatinine clearance is a measure of kidney function. Creatinine clearance is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time.

Multiple Ascending Dose (MAD) Psoriasis Cohort: Change From Baseline in Creatinine Clearance at Day 28
Baseline, 16 hours post-dose on Day 28

Creatinine clearance is a measure of kidney function. Creatinine clearance is the volume of blood plasma that is cleared of creatinine by the kidneys per unit time.

Food Effect Cohort: Area Under the Plasma Concentration-Time Curve From Time Zero Extrapolated to Infinite Time (AUCinf) of PF-06700841
Pre-dose, 0.5, 1, 2, 4, 6, 8, 12, 16, 24, 36, 48, 72 hours post dose on Day 1

AUCinf = Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0-inf).

Food Effect Cohort: Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) of PF-06700841
pre-dose, 0.5, 1, 2, 4, 6, 8, 12, 16, 24, 36, 48, 72 hours post dose on Day 1

Area under the plasma concentration time-curve from time zero to the time of last measured concentration (AUClast).

Food Effect Cohort: Maximum Observed Plasma Concentration (Cmax) of PF-06700841
pre-dose, 0.5, 1, 2, 4, 6, 8, 12, 16, 24, 36, 48, 72 hours post dose on Day 1

Secondary Endpoints

Changes From Baseline in IFN-γ Gene Expression Level in Response to PF-06700841
Baseline, Week 24 and Week 48
Changes From Baseline in CXCL9 Gene Expression Level in Response to PF-06700841
Baseline, Week 24 and Week 48
Changes From Baseline in CXCL10 Gene Expression Level in Response to PF-06700841
Baseline, Week 24 and Week 48
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PlaceboPLACEBO_COMPARATORTablets without active ingredients
PF-06700841EXPERIMENTALtablets containing active drug (a combined TYK/JAK inhibitor)
PF-06700841 60 mg once dailyEXPERIMENTALPF-06700841 60 mg once daily for 52 weeks
PF-06700841 30 mg once dailyEXPERIMENTALPF-06700841 30 mg once daily for 52 weeks
PF-06700841 10 mg once daily followed by 60 mg once dailyEXPERIMENTALPF-06700841 10 mg once daily for 16 weeks, followed by 60 mg once daily until Week 52
PF-06700841 10 mg once daily followed by 30 mg once dailyEXPERIMENTALPF-06700841 10 mg once daily for 16 weeks, followed by 30 mg once daily until Week 52
Placebo once daily followed by 60 mg once dailyPLACEBO_COMPARATORPlacebo once daily for 16 weeks, followed by PF-06700841 60 mg once daily until Week 52
Placebo once daily followed by 30 mg once dailyPLACEBO_COMPARATORPlacebo once daily for 16 weeks, followed by PF-06700841 30 mg once daily until Week 52
PF-06700841 0.1% cream QDEXPERIMENTALPF-06700841 0.1% cream applied once daily (QD)
PF-06700841 0.3% cream QDEXPERIMENTALPF-06700841 0.3% cream applied once daily (QD)
PF-06700841 1% cream QDEXPERIMENTALPF-06700841 1% cream applied once daily (QD)
PF-06700841 3% cream QDEXPERIMENTALPF-06700841 3% cream applied once daily (QD)
PF-06700841 0.3% cream BIDEXPERIMENTALPF-06700841 0.3% cream applied twice daily (BID)
PF-06700841 1% cream BIDEXPERIMENTALPF-06700841 1% cream applied twice daily (BID)
Vehicle cream QDPLACEBO_COMPARATORVehicle cream applied once daily (QD)
Vehicle cream BIDPLACEBO_COMPARATORVehicle cream applied twice daily (BID)
PF-06700841 15 mgEXPERIMENTALPF-06700841 15 mg
PF-06700841 30 mgEXPERIMENTALPF-06700841 30 mg
PF-06700841 45 mgEXPERIMENTALPF-06700841 45 mg
PF-06700841 3% cream BIDEXPERIMENTALPF-06700841 3% cream applied twice daily (BID)
PF-06700841 60 mg followed by 30 mg once dailyEXPERIMENTAL4 week induction with 60 mg PF-06700841 once daily, followed by 8 week chronic administration of 30 mg PF-06700841 once daily
PF-06700841 60 mg followed by 10 mg once dailyEXPERIMENTAL4 week induction with 60 mg PF-06700841 once daily, followed by 8 week chronic administration of 10 mg PF-06700841 once daily
PF-06700841 60mg once daily followed by 100mg once weeklyEXPERIMENTAL4 week induction with 60 mg PF-06700841 once daily, followed by 8 week chronic administration of 100 mg PF-06700841 once weekly
PF-06700841 60mg once daily followed by placebo once dailyEXPERIMENTAL4 week induction with 60 mg PF-06700841 once daily, followed by 8 week chronic administration of placebo once daily
PF-06700841 30mg once dailyEXPERIMENTAL4 week induction with 30 mg PF-06700841 once daily followed by 8 week chronic administration of 30 mg PF-06700841 once daily
PF-06700841 30mg once daily followed by 10mg once dailyEXPERIMENTAL4 week induction with 30 mg PF-06700841 once daily, followed by 8 week chronic administration of 10 mg PF-06700841 once daily
PF-06700841 30mg once daily followed by 100mg once weeklyEXPERIMENTAL4 week induction with 30 mg PF-06700841 once daily, followed by 8 week chronic administration of 100 mg PF-06700841 once weekly
PF-06700841 Oral Solution/SuspensionEXPERIMENTAL -
PF-06700841 TabletEXPERIMENTAL -

Interventions

NameTypeDescription
PF-06700841DRUGActive study drug
PlaceboDRUGplacebo comparator
Vehicle (Placebo)DRUGVehicle topical cream
PF-06700841 15 mgDRUGPF-06700841 15 mg
PF-06700841 30 mgDRUGPF-06700841 30 mg
PF-06700841 45 mgDRUGPF-06700841 45 mg
PF-06700841 oral solution/suspensionDRUGOral solution or suspension of study drug PF-06700841 (once daily or twice daily during multiple dosing periods)
PF-06700841 tabletDRUGPF-06700841 tablet formulation administered during the bioavailability / food effect investigation
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Subjects of any gender, age 18 years or older, at the time of informed consent at Screening * Subjects who are willing and able to adhere to the study visit schedule and comply with protocol requirements. * Subject self-reports active CA (LPP/FFA or CCCA). for at least 6 month...

Countries:United StatesAustraliaBulgariaCzechiaEstoniaHungaryLithuaniaPolandRussiaSerbiaSlovakiaSpainCanadaDenmarkGermanyJapanLatviaArgentinaBelgiumChinaColombiaFranceGreeceHong KongItalyMexicoPortugalRomaniaSouth KoreaTaiwanUkraineUnited Kingdom
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Frequently asked questions about PF-06700841

What is PF-06700841?

PF-06700841 is an investigational small molecule developed by Pfizer, Inc. (NYSE: PFE) for immune-mediated skin and joint conditions. It has been studied in Phase 2 clinical trials in atopic dermatitis, plaque psoriasis, psoriatic arthritis, and cicatricial alopecia. It is not approved and remains in clinical development.

What is PF-06700841 used for?

PF-06700841 has been studied in Phase 2 trials for atopic dermatitis, chronic plaque psoriasis, psoriasis, psoriatic arthritis, and cicatricial alopecia. These studies evaluated both an oral formulation and a topical cream. The drug is investigational and has not been approved for any indication.

Who makes PF-06700841?

Pfizer, Inc. (NYSE: PFE) develops PF-06700841. Pfizer sponsored the Phase 2 clinical program, which includes studies of an oral formulation and a topical cream across dermatologic and rheumatologic conditions.

What phase is PF-06700841 in?

PF-06700841 is in Phase 2 development. All four listed studies are Phase 2 trials and have been completed, including NCT05076006 in cicatricial alopecia, NCT03963401 in psoriatic arthritis, NCT03903822 in atopic dermatitis, and NCT03850483 in psoriasis. The drug is investigational and not approved.

What clinical trials is PF-06700841 in?

PF-06700841 has been evaluated in completed Phase 2 trials: NCT05076006 in cicatricial alopecia, NCT03963401 in psoriatic arthritis, NCT03903822 testing a topical cream in mild to moderate atopic dermatitis, and NCT03850483 testing a topical cream in psoriasis. These studies enrolled participants across the United States, Europe, Canada, Australia, and Japan.

Is PF-06700841 the same as PF06700841 or PF-06700841 cream?

Yes. PF06700841, PF-06700841 cream, PF-06700841 oral solution or suspension, and PF-06700841 15 mg all refer to the same investigational compound from Pfizer. The different names reflect the various formulations and dose strengths studied in Phase 2 trials.