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Lumasiran

Phase 3

Primary Hyperoxaluria | Small molecule | Rare Disease |Alnylam Pharmaceuticals, Inc.|Last Updated: Jul 18, 2025

Target and mechanism

Molecular targetHAO1
Target classRnai Inhibitor
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

Clinical trial landscape

Lumasiran · 6 trials · 12 indications

Phase 3 3Phase 2 2Phase 1 1
NCT04152200A Study to Evaluate Lumasiran in Patients With Advanced Primary Hyperoxaluria Type 1Primary Hyperoxaluria Type 1
COMPLETED21 Analytics
NCT03905694A Study of Lumasiran in Infants and Young Children With Primary Hyperoxaluria Type 1Primary Hyperoxaluria
COMPLETED18 Analytics
NCT03681184A Study to Evaluate Lumasiran in Children and Adults With Primary Hyperoxaluria Type 1Primary Hyperoxaluria Type 1 (PH1)
COMPLETED39 Analytics
PHASE3COMPLETED
A Study to Evaluate Lumasiran in Patients With Advanced Primary Hyperoxaluria Type 1
Primary Hyperoxaluria Type 1Unlock trial analytics
PHASE3COMPLETED
A Study of Lumasiran in Infants and Young Children With Primary Hyperoxaluria Type 1
Primary HyperoxaluriaUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate Lumasiran in Children and Adults With Primary Hyperoxaluria Type 1
Primary Hyperoxaluria Type 1 (PH1)Unlock trial analytics

Study Endpoints

Primary Endpoints

Cohort A: Percent Change in Plasma Oxalate From Baseline to Month 6
Baseline to Month 6

Percent change in plasma oxalate (umol/L) was estimated by an average percent change from baseline across Months 3 through 6. A negative change from Baseline indicates a favorable outcome. For Cohort A, the baseline was defined as the mean of all plasma oxalate level values collected prior to the first dose of lumasiran.

Cohort B: Percent Change in Pre-dialysis Plasma Oxalate From Baseline to Month 6
Baseline to Month 6

Percent change in plasma oxalate (umol/L) was estimated by an average percent change from baseline across Months 3 through 6. A negative change from Baseline indicates a favorable outcome. For Cohort B, the baseline is defined as the mean of the last four pre-dialysis plasma oxalate samples collected prior to the first dose of lumasiran. In Cohort B, only pre-dialysis samples are utilized.

Percentage Change in Spot Urinary Oxalate:Creatinine Ratio From Baseline to Month 6
Baseline to Month 6

Percent change in spot urinary oxalate:creatinine ratio was estimated by an average percent change from baseline across Months 3 through 6. A negative change from Baseline indicates a favorable outcome.

Percent Change in 24-hour Urinary Oxalate Excretion Corrected for Body Surface Area (BSA) From Baseline to Month 6
Baseline to Month 6

Percent change in 24-hour urinary oxalate excretion corrected for BSA was estimated by an average percent change from baseline across Months 3 through 6. Only valid urine samples without any non-protocol-related issues were included in the analysis. A negative change from Baseline indicates a favorable outcome.

Pre-dialysis Plasma Oxalate concentration
It will be measured at baseline and month 1-6 (weeks 4, 8, 12, 16, 20 and 24).

The primary endpoint is the percentage change in pre-dialysis plasma oxalate levels in non-primary hyperoxaluria patients with raised plasma oxalate levels who are receiving maintenance haemodialysis.

Number of Participants With at Least One Adverse Event (AE)
Baseline (Day -1) up to 54 months

AE is any untoward medical occurrence in a participant or clinical investigational subject administered a medicinal product and which does not necessarily have a causal relationship with this treatment. Safety analysis set included all participants who received any amount of study drug.

Number of Participants With Adverse Events (AEs)
Part A (SAD): Up to 405 days; Part B (MAD): Up to 546 days

An AE is any untoward medical occurrence in a clinical investigational subject administered a medicinal product and which does not necessarily have a causal relationship with this treatment.

Secondary Endpoints

Cohort B: Percent Change in Plasma Oxalate Area Under the Curve From 0-24 Hours [AUC(0-24)] Between Dialysis Sessions From Baseline to Month 6
Baseline to Month 6
Absolute Change in Plasma Oxalate From Baseline to Month 6
Baseline to Month 6
Cohort A: Absolute Change in 24-hour Urinary Oxalate Excretion Corrected for Body Surface Area (BSA) From Baseline to Month 6
Baseline to Month 6
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
LumasiranEXPERIMENTALAll patients will receive open-label lumasiran.
Placebo/LumasiranPLACEBO_COMPARATORLumasiran-matching placebo (normal saline \[0.9% NaCl\]) was administered subcutaneously (SC) at Day 1 and Months 1, 2 and 3 during the 6-Month Double-blind (DB) Period, followed by lumasiran SC, 3.0 mg/kg, at Months 6, 7 and 8 during the 3-Month Blinded Treatment Extension Period, followed by lumasiran SC, 3.0 mg/kg, at Month 9 and then every three months during the 51-Month Open-label Extension (OLE) period.
Lumasiran/LumasiranEXPERIMENTALLumasiran was administered SC, 3.0 mg/kg, at Day 1 and Months 1, 2 and 3 during the 6-Month DB Period, followed by lumasiran SC, 3.0 mg/kg at Month 6, and lumasiran-matching placebo SC at Months 7 and 8 during the 3-Month Blinded Treatment Extension Period, followed by lumasiran SC, 3.0 mg/kg, at Month 9 and then every three months during the 51-Month OLE period.
Lumasiran, treatment armEXPERIMENTALTreatment arm with Lumasiran
PlaceboPLACEBO_COMPARATORPlacebo injection with 0.9% sodium chloride
Lumasiran (ALN-GO1): 1.0 mg/kg QM or 3.0 mg/kg Q3MEXPERIMENTALParticipants enrolling from study 001B (NCT02706886), received lumasiran, subcutaneous (SC) injection, at a starting dose of 1.0 milligrams per kilograms (mg/kg) once monthly (QM) or 3.0 mg/kg once every 3 months \[Q3M\]) from Day 1 up to a maximum of Month 6. By Month 6, all participants were approved to change dose and/or dosing regimen to receive lumasiran, SC injection at a dose of 3.0 mg/kg, Q3M, up to Month 51 of the treatment period. All 3 participants who began treatment at 1 mg/kg QM transitioned to 3 mg/kg Q3M regimen by Month 6. As the cumulative dose administered over 6 months was the same for both 1 mg/kg QM \& 3 mg/kg Q3M, these participants were pooled into one arm as recommended by the Safety Review Committee (SRC).
Lumasiran (ALN-GO1): 3.0 mg/kg QMEXPERIMENTALParticipants enrolling from study 001B, received lumasiran, SC injection, at a starting dose of 3.0 mg/kg, QM, from Day 1 up to a maximum of Month 21. By Month 21, all participants were approved to change dosing regimen to receive lumasiran, SC injection, at a dose of 3.0 mg/kg, Q3M, up to Month 51 of the treatment period.
Part A: SAD: PlaceboPLACEBO_COMPARATORA single dose of matching placebo will be administered subcutaneously (SC).
Part A: SAD: Lumasiran 0.3 mg/kgEXPERIMENTALA single dose of 0.3 mg/kg lumasiran will be administered SC.
Part A: SAD: Lumasiran 1.0 mg/kgEXPERIMENTALA single dose of 1.0 mg/kg lumasiran will be administered SC.
Part A: SAD: Lumasiran 3.0 mg/kgEXPERIMENTALA single dose of 3.0 mg/kg lumasiran will be administered SC.
Part A: SAD: Lumasiran 6.0 mg/kgEXPERIMENTALA single dose of 6.0 mg/kg lumasiran will be administered SC.
Part B: MAD: PlaceboPLACEBO_COMPARATORParticipants with primary hyperoxaluria type 1 (PH1) will be treated with placebo matching one of the lumasiran dosages in the lumasiran arms (one placebo participant for each lumasiran arm). At Day 85 these placebo treated participants will cross over to their respective Part B lumasiran arms in the Part B: MAD Study Day 85-End of Study Period and will then be treated with lumasiran. The estimated total time on study was up to 546 days.
Part B: MAD: Lumasiran 1.0 mg/kg qMEXPERIMENTALParticipants with PH1 will be treated with 1.0 mg/kg lumasiran SC once monthly (qM) on Days 1, 29 and 57. The estimated total time on study is up to 546 days. One participant from the Part B: MAD: Placebo arm will cross over to this lumasiran arm at Day 85. For this participant treatment with lumasiran starts at Day 85.
Part B: MAD: Lumasiran 3.0 mg/kg qMEXPERIMENTALParticipants with PH1 will be treated with 3.0 mg/kg lumasiran SC qM on Days 1, 29 and 57. The estimated total time on study is up to 546 days. One participant from the Part B: MAD: Placebo arm will cross over to this lumasiran arm at Day 85. For this participant treatment with lumasiran starts at Day 85.
Part B: MAD: Lumasiran 3.0 mg/kg q3MEXPERIMENTALParticipants with PH1 will be treated with 3.0 mg/kg lumasiran SC once every three months (q3M) on Days 1 and 85. The estimated total time on study is up to 546 days. One participant from the Part B: MAD: Placebo arm will cross over to this lumasiran arm at Day 85. For this participant treatment with lumasiran starts at Day 85.

Interventions

NameTypeDescription
LumasiranDRUGLumasiran will be administered by subcutaneous (SC) injection.
PlaceboDRUGPlacebo by SC injection
0.9% Sodium Chloride (placebo)DRUGPlacebo, subcutaneous injection, given as three monthly loading doses followed by one further maintenance dose.
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Eligibility Criteria

Age Range0 Years to 5 Years
SexALL
Healthy VolunteersNo
Study Sites14

Inclusion Criteria: * Has documented diagnosis of primary hyperoxaluria type 1 (PH1) * Estimated glomerular filtration rate (eGFR) ≤45 mL/min/1.73 m\^2 for patients ≥12 months of age (\<12 months of age, must have serum creatinine considered elevated for age) * Meets plasma oxalate level requiremen...

Countries:United StatesAustraliaBelgiumFranceIsraelItalyJordanLebanonNetherlandsTurkey (Türkiye)United Arab EmiratesGermanyUnited KingdomSwitzerland
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Frequently asked questions about Lumasiran

What is Lumasiran used for?

Lumasiran is an investigational small molecule being studied for Primary Hyperoxaluria Type 1 (PH1), a rare genetic condition, and for hyperoxalemia in patients on haemodialysis. It is being developed by Alnylam Pharmaceuticals for these indications.

What does Lumasiran target?

Lumasiran is a small molecule with a -siran (siRNA) target class. It is designed to target the AGT gene, which is involved in the pathway leading to oxalate overproduction in Primary Hyperoxaluria Type 1.

Who makes Lumasiran?

Lumasiran is being developed by Alnylam Pharmaceuticals, Inc., a biopharmaceutical company traded on the stock exchange under the ticker symbol ALNY.

What phase is Lumasiran in?

Lumasiran is in Phase 2 clinical development. It has completed Phase 2 and Phase 3 trials, and a Phase 2 trial in haemodialysis patients is currently recruiting participants.

What clinical trials is Lumasiran in?

Lumasiran has been studied in several clinical trials, including NCT03350451, NCT03905694, NCT04152200, and NCT06225544. The trials cover PH1 and hyperoxalemia in haemodialysis patients, with the latter currently recruiting.

Is Lumasiran the same as ALN-GO1?

Yes, Lumasiran is also known as ALN-GO1. This alternative name appears in the title of the extension study NCT03350451, which refers to Lumasiran as ALN-GO1.