Recent Updates
Recently added Catalysts

AEB1102

Phase 3

Arginase I Deficiency | Small molecule | Other |Spyre Therapeutics, Inc.|Trials Updated: Nov 19, 2024

AEB1102 development status

Highest phase Phase 3 (NCT05676853)
Phase scored for SYREPhase 2
Registered trials 7 across 1 sponsor since Apr 2001

AEB1102 target and mechanism

Molecular targetarginase
Target classEnzyme
ModalitySmall molecule

Also known as Co-ArgI-PEG, Pegzilarginase, Co-ArgI-PEG modified human arginase I

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

UNCONTROLLEDDMC
Total Trials6
Total Enrollment257

FDA Designations

No designations recorded

AEB1102 clinical trials

AEB1102 · 6 trials · 6 indications

Phase 3 1Phase 2 2Phase 1 3
NCT03921541Efficacy and Safety of Pegzilarginase in Patients With Arginase 1 DeficiencyArginase I Deficiency
COMPLETED32 Analytics
PHASE3COMPLETED
Efficacy and Safety of Pegzilarginase in Patients With Arginase 1 Deficiency
Arginase I DeficiencyUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in Plasma Arginine Concentration After 24 Weeks of Treatment
Baseline through Week 24

The primary analysis will test the change in the level of plasma arginine between baseline and completion of week 24 assessments. It will compare the change from baseline in plasma arginine between participants treated with pegzilarginase and those treated with placebo.

Incidence of treatment-related adverse events
up to 4 years
Maximum Tolerated Dose and Recommended Phase 2 Dose
4 weeks

The dose level at which no more than 1/6 patients experiences dose-limiting toxicity

Number of subjects with adverse events
weekly throughout the study, up to 14 weeks

Includes significant changes in hematology, chemistry and coagulation laboratory studies as well as in physical exam and vital signs

maximum tolerated dose
4 weeks

the dose level at which no more than 1/6 patients experiences dose-limiting toxicity

1. Phase 1: Incidence of treatment-related adverse events as assessed by CTCAE v4.0
Estimated up to 6 months

1\. Number of participants experiencing treatment-related adverse events as assessed by CTCAE v4.0.

Phase 2: Efficacy determined by Objective Response Rate (ORR:CR+PR) per RECIST 1.1.
Estimated up to 6 months

1\. Objective Response Rate (ORR:) per RECIST 1.1 • The Objective Response Rate (ORR) is defined as the percentage of subjects whose best objective response (BOR) is either complete response (CR) or partial response (PR). The ORR will be derived from the BOR according to response evaluation criteria in solid tumors (RECIST) v1.1 as assessed by the Investigator.

Secondary Endpoints

Mean Change From Baseline in the Mobility Assessments of the Key Secondary Outcome Measure of the 2 Minute Walk Test
Baseline through Week 24
Mean Change From Baseline in the Mobility Assessments of the Key Secondary Outcome Measure of GMFM-E
Baseline through Week 24
Proportion of Participants With Plasma Arginine Levels Below Target Guidance
Baseline and week 24
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PegzilarginaseEXPERIMENTALWeekly IV infusions of pegzilarginase plus individualized disease management for 24 weeks
PlaceboPLACEBO_COMPARATORWeekly IV infusions of placebo plus individualized disease management for 24 weeks
Pegzilarginase Long Term ExtensionEXPERIMENTALAfter completion of 24 weeks DB treatment, weekly IV infusions of pegzilarginase plus individualized disease management for an additional 150 weeks, with the option to receive treatment by SC after 8 weeks of the LTE study.
AEB1102EXPERIMENTALEach patient may receive AEB1102 administered IV for up to approximately 4 years.
AEB1102 (Co-ArgI-PEG) administered via IV weekly.EXPERIMENTALCo-ArgI-PEG modified human arginase I
AEB1102 Dose Escalation Cohort 1EXPERIMENTAL3 patients dosed at 0.01 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 2EXPERIMENTAL4 patients dosed at 0.02 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 3EXPERIMENTAL4 patients dosed at 0.04 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 4EXPERIMENTAL4 patients dosed at 0.08 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 5EXPERIMENTAL3 patients dosed at 0.12 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 6EXPERIMENTAL4 patients dosed at 0.18 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 7EXPERIMENTAL5 patients dosed at 0.27 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 8EXPERIMENTAL7 patients dosed at 0.40 mg/kg until MTD determined
AEB1102 Dose Escalation Cohort 9EXPERIMENTAL7 patients dosed at 0.33 mg/kg until MTD determined MTD determined at 0.33 mg/kg
AEB1102 ExpansionEXPERIMENTALUveal: 11 patients dosed at 0.33 mg/kg Cutaneous Melanoma: 11 dosed at 0.33 mg/kg SCLC: 13 patients dosed at 0.33 mg/kg
Pegzilarginase plus PembrolizumabEXPERIMENTALPhase 1 \& 2

Interventions

NameTypeDescription
PegzilarginaseDRUGIndividualized disease management which includes severe protein restriction, essential amino acid supplementation and the ammonia scavengers when indicated
PlaceboDRUGIndividualized disease management which includes severe protein restriction, essential amino acid supplementation and the ammonia scavengers when indicated
AEB1102DRUGmodified human arginase I
Co-ArgI-PEG modified human arginase IDRUG -
Co-ArgI-PEGDRUGAdministered IV
PembrolizumabDRUGAdministered IV
Unlock Study Design Details

Eligibility Criteria

Age Range2 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites32

Inclusion Criteria: Subjects are eligible to be included in the study only if all the following criteria apply: 1. The subject and/or parent/guardian provides written informed consent/assent, which includes compliance with the requirements and restrictions listed in the informed consent form (ICF)...

Countries:United StatesAustriaCanadaFranceGermanyItalyUnited KingdomPortugalPuerto Rico
Unlock Eligibility Criteria

Frequently asked questions about AEB1102

What is AEB1102?

AEB1102 is an investigational small molecule developed by Spyre Therapeutics, Inc. (ticker: SYRE) for the treatment of Arginase I Deficiency, a rare metabolic disorder also associated with hyperargininemia. It is designed to target the enzyme arginase. AEB1102 is in Phase 2 clinical development and has been studied in two completed clinical trials.

What is AEB1102 used for in Arginase I Deficiency?

AEB1102 is being developed for the treatment of Arginase I Deficiency, a rare inherited metabolic condition that leads to hyperargininemia. It is an investigational therapy and has been evaluated in two completed clinical trials. The trials enrolled patients with Arginase I Deficiency and hyperargininemia, including pediatric patients aged 2 years and older.

What does AEB1102 target?

AEB1102 targets arginase, an enzyme involved in the urea cycle. By targeting this enzyme, the drug aims to address the metabolic consequences of Arginase I Deficiency. AEB1102 is a small molecule and is being developed by Spyre Therapeutics, Inc. (ticker: SYRE).

Who is developing AEB1102?

AEB1102 is being developed by Spyre Therapeutics, Inc., which trades under the ticker SYRE. The company is responsible for the clinical development of the drug, including the completed Phase 1/2 and Phase 2 trials in patients with Arginase I Deficiency.

What phase is AEB1102 in?

AEB1102 is in Phase 2 clinical development. It has not been approved by the FDA and remains an investigational therapy. Two clinical trials have been completed: a Phase 1/2 study and a Phase 2 study. Both trials enrolled patients with Arginase I Deficiency and hyperargininemia.

What clinical trials is AEB1102 in?

AEB1102 has been studied in two completed clinical trials: NCT03378531, a Phase 2 study in patients with Arginase I Deficiency, and NCT02488044, a Phase 1/2 study in the same condition. Both trials enrolled patients aged 2 years and older across the United States, Canada, Portugal, and the United Kingdom. No active trials are currently listed.