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NCT03918239

A Study to Determine the Bioavailability of Lanadelumab (SHP643) Administered Subcutaneously With the Prefilled Syringe and the Autoinjector in Healthy Adult Volunteer Participants.

Completed Phase 1 Results posted Last updated 8 December 2020
What this trial tests

Phase 1 trial testing SHP643 in Healthy Volunteers in 190 participants. Completed in 13 November 2019.

Timeline
14 May 2019
Primary endpoint
13 November 2019
13 November 2019

Quick facts

Lead sponsorShire
PhasePhase 1
StatusCompleted
Study typeINTERVENTIONAL
Allocationrandomized
Designparallel
Maskingnone
Primary purposetreatment
Enrollment190
Start date14 May 2019
Primary completion13 November 2019
Estimated completion13 November 2019
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

Shire — full company profile →

Who can join

Adults 18 to 55, any sex, with Healthy Volunteers. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Area Under the Concentration Versus Time Curve From Time Zero to the Last Quantifiable Concentration (AUC0-last) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post dose

AUC(0-last) of SHP643 in plasma was reported. Geometric mean and geometric coefficient of variation percent (CV%) was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)348.9± 33.4
SHP643 Autoinjector (AI)376.5± 41.3
Area Under the Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUC0-Inf) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

AUC(0-infinity) of SHP643 in plasma was reported. Geometric mean and geometric coefficient of variation percent (CV%) was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)352.5± 32.9
SHP643 Autoinjector (AI)380.3± 40.8
Maximum Observed Plasma Drug Concentration (Cmax) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

Cmax is the maximum observed plasma concentration of SHP643 in Plasma was reported. Geometric mean and geometric coefficient of variation percent (CV%) was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)15.86± 40.6
SHP643 Autoinjector (AI)18.35± 48.0
Minimum Time to Reach (Tmax) in Maximum Observed Plasma Drug Concentration of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

Tmax of of SHP643 in plasma was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)4.003.00 – 19.97
SHP643 Autoinjector (AI)4.002.00 – 6.92
Terminal Half-Life (T1/2) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

t1/2 of of SHP643 in plasma was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)13.769.70 – 20.5
SHP643 Autoinjector (AI)13.208.21 – 40.1
Apparent Total Body Clearance for Extravascular Administration Divided by the Fraction of Dose Absorbed (CL/F) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

CL/F of of SHP643 in plasma was reported. Geometric mean and geometric coefficient of variation percent (CV%) was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)0.8511± 32.9
SHP643 Autoinjector (AI)0.7888± 40.8
Apparent Volume of Distribution Associated With the Terminal Slope Following Extravascular Administration Divided by the Fraction of Dose Absorbed (Vdz/F) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

Vdz/F of SHP643 in plasma was reported. Geometric mean and geometric coefficient of variation percent (CV%) was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)16.79± 31.6
SHP643 Autoinjector (AI)15.37± 42.7
Terminal Elimination Rate Constant (Lambda z) of SHP643 in Plasma Primary · Pre-dose, 8, 24, 48, 72, 96, 168, 336, 504, 672, 1008, 1344, 2016, 2664 hours post-dose

Lambda z of SHP643 in Plasma was reported. Geometric mean and geometric coefficient of variation percent (CV%) was reported.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)0.05070± 15.1
SHP643 Autoinjector (AI)0.05132± 22.1
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) Secondary · From start of study drug administration up to Day 112 (End of Study/Early Termination [EOS/ET])

An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product that did not necessarily have a causal relationship with the investigational product (IP) or medicinal product. A treatment-emergent AE (TEAE) was defined as any event emerging or manifesting at or after the initiation of treatment with an IP or medicinal product or any existing event that worsened in either intensity or frequency following exposure to the IP or medicinal product.

GroupValue95% CI
SHP643 Prefilled Syringe (PFS)19
SHP643 Autoinjector (AI)30
Number of Participants Who Developed Positive Antidrug Antibodies to SHP643 at Specified Time Points Secondary · Day 1, 14, 28, 56 and 112 (End of Study/Early Termination [EOS/ET])

Plasma samples were analyzed for presence of antidrug antibodies to SHP643. Participants who developed positive results for SHP643 antibodies were reported.

Participants with positive ADA: Day 1
GroupValue95% CI
SHP643 Prefilled Syringe (PFS)1
SHP643 Autoinjector (AI)0
Participants with positive ADA: Day 14
GroupValue95% CI
SHP643 Prefilled Syringe (PFS)0
SHP643 Autoinjector (AI)0
Participants with positive ADA: Day 28
GroupValue95% CI
SHP643 Prefilled Syringe (PFS)1
SHP643 Autoinjector (AI)0
Participants with positive ADA: Day 56
GroupValue95% CI
SHP643 Prefilled Syringe (PFS)0
SHP643 Autoinjector (AI)1
Participants with positive ADA: Day 112 (EOS/ET)
GroupValue95% CI
SHP643 Prefilled Syringe (PFS)0
SHP643 Autoinjector (AI)1

Adverse events — posted to ClinicalTrials.gov

Time frame: From start of study drug administration up to Day 112 (End of Study/Early Termination [EOS/ET]). Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

SHP643 Prefilled Syringe (PFS)
Serious: 2/94 (2%)
Deaths: 0/94
SHP643 Autoinjector (AI)
Serious: 2/96 (2%)
Deaths: 0/96

Serious adverse events (5 terms)

ReactionSystemSHP643 Prefilled Syringe (…SHP643 Autoinjector (AI)
AnaemiaBlood and lymphatic system disorders
AppendicitisInfections and infestations
Abortion spontaneousPregnancy, puerperium and perinatal conditions
NephrolithiasisRenal and urinary disorders
Abortion inducedSurgical and medical procedures
Other adverse events (1 terms — click to expand)

ReactionSystemSHP643 Prefilled Syringe (…SHP643 Autoinjector (AI)
Injection site haemorrhageGeneral disorders

Most-reported serious reactions: Anaemia, Appendicitis, Abortion spontaneous, Nephrolithiasis, Abortion induced.

Data from ClinicalTrials.gov NCT03918239 adverse events section.

Sponsor's own description

The purpose of this study is to evaluate bioavailability of lanadelumab (SHP643) following a single, 2 milliliter (mL) subcutaneous (SC) dose of 300 milligrams (mg) delivered by prefilled syringe (PFS) or auto injector (AI) in healthy adult participants.

Publications & conference data

1 peer-reviewed publication reference this trial (live from Europe PMC):

  1. Abstracts of the 14th C1-inhibitor Deficiency and Angioedema Workshop.
    · 2026 · PMID 41484981 · DOI 10.1186/s13223-025-00992-1

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