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LOXO-305

Phase 2

Leukemia, Lymphoid | Small molecule | Oncology |Eli Lilly and Company|Last Updated: Feb 6, 2026

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment87

FDA Designations

No designations recorded

Clinical trial landscape

LOXO-305 · 4 trials · 9 indications

Phase 2 1Phase 1 3
NCT04849416A Study of LOXO-305 in Chinese Participants With Blood Cancer (Including Lymphoma and Chronic Leukemia)Leukemia, Lymphoid
COMPLETED87 Analytics
PHASE2COMPLETED
A Study of LOXO-305 in Chinese Participants With Blood Cancer (Including Lymphoma and Chronic Leukemia)
Leukemia, LymphoidUnlock trial analytics

Study Endpoints

Primary Endpoints

Primary Analysis Set (PAS): Overall Response Rate (ORR) Assessed by Independent Review Committee
Date of First Dose to Date of Disease Progression or Subsequent Anti-cancer Therapy (up to 100 Weeks)

ORR was assessed by an Independent Review Committee (IRC). It was estimated based on the percentage of participants with best overall response (BOR) of complete response (CR) or partial response (PR). Two-sided 95% CI was calculated using the exact binomial distribution. PAS consisted of participants with Central histologically confirmed non-blastoid MCL, with no CNS metastases and treated with prior chemoimmunotherapy and BTK inhibitor-containing regimen, measurable disease at baseline as assessed using Lugano criteria, and have received at least 1 dose of study drug.

Part 1: Pharmacokinetics (PK): Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

AUC0-inf of LOXO-305 in plasma.

Part 1: PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of Total Radioactivity in Plasma and Whole Blood Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

AUC0-inf of total radioactivity in plasma and whole blood.

Part 1: PK: Area Under the Concentration-time Curve From Hour 0 to the Last Measurable Concentration (AUC0-t) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

AUC0-t of LOXO-305 in plasma.

Part 1: PK: Area Under the Concentration-time Curve From Hour 0 to the Last Measurable Concentration (AUC0-t) of Total Radioactivity in Plasma and Whole Blood Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

AUC0-t of total radioactivity in plasma and whole blood.

Part 1: PK: Maximum Observed Plasma Concentration (Cmax) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

Cmax of LOXO-305 in plasma.

Part 1: PK: Maximum Observed Plasma Concentration (Cmax) of Total Radioactivity in Plasma and Whole Blood Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

Cmax of total radioactivity in plasma and whole blood.

Part 1: PK: Time to Maximum Observed Concentration (Tmax) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

Tmax of LOXO-305 in plasma.

Part 1: PK: Time to Maximum Observed Concentration (Tmax) of Total Radioactivity in Plasma and Whole Blood Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

Tmax of total radioactivity in plasma and whole blood.

Part 1: PK: Apparent Terminal Elimination Half-life (t1/2) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

t1/2 of LOXO-305 in plasma.

Part 1: PK: Apparent Terminal Elimination Half-life (t1/2) of Total Radioactivity in Plasma and Whole Blood Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

t1/2 of total radioactivity in plasma and whole blood.

Part 1: PK: Apparent Systemic Clearance (CL/F) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

CL/F of LOXO-305 in plasma.

Part 1: PK: Apparent Volume of Distribution (Vz/F) of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

Vz/F of LOXO-305 in plasma.

Part 1: PK: Ratio of AUC0-inf of Plasma LOXO-305 to AUC0-inf of Plasma Total Radioactivity
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

AUC0-inf of plasma LOXO-305 relative to AUC0-inf of plasma total radioactivity, expressed in ratio.

Part 1: PK: Ratio of AUC0-inf of Whole Blood Total Radioactivity to AUC0-inf of Plasma Total Radioactivity
Pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

AUC0-inf of whole blood total radioactivity relative to AUC0-inf of plasma total radioactivity, expressed in ratio.

Part 1: PK: Cumulative Amount of Total Radioactivity Excreted in Urine
Pre-dose, 0 (time of dose), 6, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

The urine sampling time points from pre-dose through 360 hours post-dose were used to assess this outcome.

Part 1: PK: Cumulative Amount of Total Radioactivity Excreted in Feces
0 (time of dose), 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

The feces sampling time points from the 0 hour (i.e. time of dose) through 360 hours post-dose were used to assess this outcome.

Part 1: PK: Mean Cumulative Percentage of Total Radioactivity Excreted in Feces
0 (time of dose), 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

The feces sampling time points from the 0 hour (i.e. time of dose) through 360 hours post-dose were used to assess this outcome.

Part 1: PK: Mean Cumulative Percentage of Total Radioactivity Excreted in Urine
Pre-dose, 0 (time of dose), 6, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

The urine sampling time points from pre-dose through 360 hours post-dose were used to assess this outcome.

Part 1: PK: Metabolic Profile of LOXO-305 in Plasma Following a Single Oral Dose of [14C]-LOXO-305
1, 2, 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264 h post-dose

The metabolic profile of LOXO-305 following a single oral dose of \[14C\]-LOXO-305 was done to assess the presence of LOXO-305 and various metabolites (M1 to M4, M11, M12, M15 to M22) in plasma using high-performance liquid chromatography with radiochemical detection. Metabolites are identified by comparison with known standards (when available) and/or by liquid chromatography/tandem mass spectrometry analysis. The presence of any metabolite in a given matrix is indicated as '1' and absence from that matrix is indicated as '0'.

Part 1: PK: Metabolic Profile of LOXO-305 in Urine Following a Single Oral Dose of [14C]-LOXO-305
Pre-dose, 0 (time of dose), 6, 12, 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

The metabolic profile of LOXO-305 following a single oral dose of \[14C\]-LOXO-305 was done to assess the presence of LOXO-305 and various metabolites (M1 to M4, M11, M12, M15 to M22) in urine using high-performance liquid chromatography with radiochemical detection. Metabolites are identified by comparison with known standards (when available) and/or by liquid chromatography/tandem mass spectrometry analysis. The presence of any metabolite in a given matrix is indicated as '1' and absence from that matrix is indicated as '0'.

Part 1: PK: Metabolic Profile of LOXO-305 in Feces Following a Single Oral Dose of [14C]-LOXO-305
0 (time of dose), 24, 48, 72, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360 hours post-dose

The metabolic profile of LOXO-305 following a single oral dose of \[14C\]-LOXO-305 was done to assess the presence of LOXO-305 and various metabolites (M1 to M4, M11, M12, M15 to M22) in feces using high-performance liquid chromatography with radiochemical detection. Metabolites are identified by comparison with known standards (when available) and/or by liquid chromatography/tandem mass spectrometry analysis. The presence of any metabolite in a given matrix is indicated as '1' and absence from that matrix is indicated as '0'.

Part 2: PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

AUC0-inf of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

AUC0-inf of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of Total Radioactivity in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

AUC0-inf of total radioactivity in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Area Under the Concentration-time Curve From Hour 0 to the Last Measurable Concentration (AUC0-t) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

AUC0-t of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Area Under the Concentration-time Curve From Hour 0 to the Last Measurable Concentration (AUC0-t) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

AUC0-t of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Area Under the Concentration-time Curve From Hour 0 to the Last Measurable Concentration (AUC0-t) of Total Radioactivity in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

AUC0-t of Total Radioactivity in Plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Maximum Observed Plasma Concentration (Cmax) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

Cmax of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Maximum Observed Plasma Concentration (Cmax) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

Cmax of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Maximum Observed Plasma Concentration (Cmax) of Total Radioactivity in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

Cmax of Total Radioactivity in Plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Time to Maximum Observed Concentration (Tmax) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

Tmax of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Time to Maximum Observed Concentration (Tmax) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

Tmax of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Time to Maximum Observed Concentration (Tmax) of Total Radioactivity in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

Tmax of Total Radioactivity in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Apparent Terminal Elimination Half-life (t1/2) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

t1/2 of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Apparent Terminal Elimination Half-life (t1/2) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

t1/2 of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Apparent Terminal Elimination Half-life (t1/2) of Total Radioactivity in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

t1/2 of Total Radioactivity in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Apparent Systemic Clearance (CL/F) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

CL/F of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Apparent Volume of Distribution During the Terminal Phase (Vz/F) of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

Vz/F of LOXO-305 in plasma. The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Absolute Bioavailability of LOXO-305 in Plasma
Pre-oral dose, 0.5, 1, 2 hours post oral dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The absolute bioavailability expressed in ratio was calculated using the formula= AUC0-inf (oral) x Dose (IV) divided by AUC0-inf (IV) x Dose (oral) . The sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Total Clearance (CL) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

CL of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Volume of Distribution (Vz) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose.

Vz of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Volume of Distribution at Steady State (Vss) of [14C]-LOXO-305 in Plasma
Pre-IV dose, 0.03, 0.17, 0.33, 0.5, 0.75, 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

Vss of \[14C\]-LOXO-305 in plasma. The sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Renal Clearance (CLR) of [14C]-LOXO-305
Pre-IV dose, 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

CLR of \[14C\]-LOXO-305 in urine collection. The urine sampling time points from pre-IV dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Cumulative Amount of [14C]-LOXO-305 Excreted in Urine
Pre-oral dose, 0 (time of oral dose), 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The urine sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Cumulative Amount of Total Radioactivity Excreted in Urine
Pre-oral dose, 0 (time of oral dose), 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The urine sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Cumulative Amount of [14C]-LOXO-305 Excreted in Feces
0 (time of oral dose), 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The Feces sampling time points from the 0 hour (i.e. time of oral dose) through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Cumulative Amount of Total Radioactivity Excreted in Feces
0 (time of oral dose), 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The Feces sampling time points from the 0 hour (i.e. time of oral dose) through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Mean Cumulative Percentage of [14C]-LOXO-305 Excreted in Urine
Pre-oral dose, 0 (time of oral dose), 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The urine sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Mean Cumulative Percentage of Total Radioactivity Excreted in Urine
Pre-oral dose, 0 (time of oral dose), 4, 8, 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The urine sampling time points from pre-oral dose through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Mean Cumulative Percentage of [14C]-LOXO-305 Excreted in Feces
0 (time of oral dose), 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The Feces sampling time points from the 0 hour (i.e. time of oral dose) through 192 hours post-IV dose were used to assess this outcome.

Part 2: PK: Mean Cumulative Percentage of Total Radioactivity Excreted in Feces
0 (time of oral dose), 12, 24, 48, 72, 96, 120, 144, 168, 192 hours post IV dose

The Feces sampling time points from the 0 hour (i.e. time of oral dose) through 192 hours post-IV dose were used to assess this outcome.

Part 1: Pharmacokinetics (PK): Maximum Observed Plasma Concentration (Cmax) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose on days 1 and 12

Cmax of LOXO-305

Part 1: PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Measurable Concentration (AUC0-t) of LOXO 305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose on days 1 and 12

PK: AUC0-t of LOXO 305

Part 1: PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose on days 1 and 12

AUC0-inf of LOXO-305

Part 2: PK: Maximum Observed Plasma Concentration (Cmax) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose on days 1 and 17; Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose on day 8

Cmax of LOXO-305

Part 2: PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Measurable Concentration (AUC0-t) of LOXO 305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose on days 1 and 17; Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose on day 8

PK: AUC0-t of LOXO 305

Part 2: PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose on days 1 and 17

AUC0-inf of LOXO-305

Part 2: PK: Area Under the Concentration Versus Time Curve From Time Zero to 24 Hours Postdose (AUC0-24) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose on days 1 and 8

AUC0-24 of LOXO-305

Pharmacokinetics (PK): Area Under the Concentration-time Curve From Hour 0 to 24 (AUC [0-24]) Hours of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post LOXO-305 dose

PK: AUC(0-24) hours of LOXO-305 is reported. AUC(0-24) was calculated by the linear trapezoidal method.

PK: Area Under the Concentration-time Curve From Hour 0 to the Last Measurable Concentration (AUC[0-t]) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: AUC(0-t) of LOXO-305 is reported. AUC(0-t) was calculated by linear trapezoidal method.

PK: Area Under the Concentration-time Curve Extrapolated to Infinity (AUC[0-Inf]) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: AUC(0-inf) of LOXO-305 is reported. AUC(0-inf) was calculated using the formula: AUC(0-inf) = AUC(0-t) + Ct/λZ; where Ct is the last measurable concentration and λZ is the apparent terminal elimination rate constant.

PK: Percentage Extrapolation for AUC0-Inf (%AUCextrap) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: %AUCextrap of LOXO-305 is reported.

PK: Maximum Observed Plasma Concentration (Cmax) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: Cmax of LOXO-305 is reported.

PK: Time to Maximum Observed Plasma Concentration (Tmax) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: tmax of LOXO-305 is reported.

PK: Apparent Terminal Elimination Half-life (t½) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: t½ of LOXO-305 is reported.

PK: Apparent Systemic Clearance (CL/F) of LOXO-305
Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours post LOXO-305 dose

PK: CL/F of LOXO-305 is reported.

Secondary Endpoints

PAS ORR: ORR Assessed by Investigator
Date of First Dose to Date of Disease Progression or Subsequent Anti-cancer Therapy (up to 100 Weeks)
PAS Best Overall Response (BOR): Percentage of Participants With CR, PR, Stable Disease (SD), Progressive Disease (PD) or Not Evaluable (NE)
Date of First Dose to Date of Disease Progression or Subsequent Anti-cancer Therapy (up to 100 Weeks)
PAS: Duration of Response (DOR)
Date of CR or PR to Date of Disease Progression or Death Due to Any Cause (Up to 100 Weeks)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
LOXO-305EXPERIMENTALParticipants received 200 mg of LOXO-305 administered orally once daily (QD) on Days 1 through 28 of a 28-day cycle. The treatment was continued until progressive disease, a discontinuation criterion, or unacceptable toxicity.
Part 1: [14C]-LOXO-305 Oral SolutionEXPERIMENTALParticipants received a single dose of 200 milligram (mg) LOXO-305 radiolabelled with carbon-14, i.e., \[14C\]-LOXO-305 (approximately 200 microcurie radioactivity) administered as an oral solution.
Part 2: LOXO-305 Oral Tablet + [14C]-LOXO-305 IV SolutionEXPERIMENTALParticipants received: a single dose of 200 mg LOXO-305 administered as 2×100 mg oral tablets followed 2 hours later by a single dose of less than 100 microgram (μg) of \[14C\]-LOXO-305 (approximately 1 microcurie radioactivity) administered as an intravenous (IV) push over approximately 2 minutes.
Part 1 (LOXO-305/Itraconazole)EXPERIMENTAL* Day 1: a single oral dose of 200 milligrams (mg) LOXO-305 was administered. * Day 8: oral doses of 200 mg itraconazole was administered twice daily. * Days 9 to 18: single oral dose of 200 mg itraconazole was administered once daily, and on Day 12 it was co-administered with a single oral dose of 200 mg LOXO-305.
Part 2 (LOXO 305/Rifampin)EXPERIMENTAL* Day 1: a single oral dose of 200 mg LOXO-305 was administered. * Days 8 to 23: oral dose of 600 mg rifampin was administered once daily, and on Days 8 \& 17, it was co-administered with a single oral dose of 200 mg LOXO-305.
Treatment Sequence 1: ABCEXPERIMENTAL* Period 1: Single oral dose of 200 milligram (mg) LOXO-305 (Fasted state) on Day 1 (Treatment A) * Period 2: Single oral dose of 200 mg LOXO-305 (Fed state) on Day 8 (Treatment B) * Period 3: Single oral dose of 40 mg Omeprazole (Fasted state) on Day 15 to 17 and single oral dose of 200 mg LOXO-305 + 40 mg Omeprazole (Fasted state) on Day 18 (Treatment C) A washout period of 7 days was maintained between each treatment period.
Treatment Sequence 2: BACEXPERIMENTAL* Period 1: Single oral dose of 200 mg LOXO-305 (Fed state) on Day 1 (Treatment B) * Period 2: Single oral dose of 200 mg LOXO-305 (Fasted state) on Day 8 (Treatment A) * Period 3: Single oral dose of 40 mg Omeprazole (Fasted state) on Day 15 to 17 and single oral dose of 200 mg LOXO-305 + 40 mg Omeprazole (Fasted state) on Day 18 (Treatment C) A washout period of 7 days was maintained between each treatment period.

Interventions

NameTypeDescription
LOXO-305DRUGAdministered orally.
[14C]-LOXO-305DRUGAdministered orally
ItraconazoleDRUGOral itraconazole
RifampinDRUGOral rifampin
OmeprazoleDRUGOmeprazole Orally.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites22

Inclusion Criteria * Participants with histologically confirmed B-cell malignancy including: * Mantle cell lymphoma (MCL) treated with a prior Bruton's tyrosine kinase (BTK) inhibitor containing regimen; * CLL/SLL treated with a prior BTK inhibitor containing regimen; * Other types of B-cell...

Countries:ChinaUnited States
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Frequently asked questions about LOXO-305

What is LOXO-305?

LOXO-305 is an investigational small molecule being developed by Eli Lilly and Company (LLY). It is studied in blood cancers including leukemia and lymphoma, as well as in healthy volunteers for drug interaction and metabolism studies. It is currently in clinical development and not approved.

What is LOXO-305 used for?

LOXO-305 is being studied for use in blood cancers, including chronic lymphocytic leukemia, mantle cell lymphoma, diffuse large B-cell lymphoma, marginal zone lymphoma, and other B-cell lymphomas. It is also studied in healthy volunteers to assess drug interactions and effects of food and other medications.

Who makes LOXO-305?

LOXO-305 is developed by Eli Lilly and Company, a pharmaceutical company traded on the NYSE under the ticker LLY. The company is conducting clinical trials to evaluate the drug's safety and efficacy in various patient populations.

What phase is LOXO-305 in?

LOXO-305 is in Phase 1 and Phase 2 clinical trials. Completed trials include a Phase 2 study in Chinese participants with blood cancer and Phase 1 studies in healthy volunteers. The drug is investigational and not yet approved by regulatory authorities.

What clinical trials is LOXO-305 in?

LOXO-305 has completed several trials. NCT04849416 is a Phase 2 study in Chinese participants with blood cancer. NCT05134337 and NCT05134350 are Phase 1 studies in healthy volunteers examining effects of itraconazole, rifampin, food, and omeprazole. NCT06180954 is a Phase 1 study of carbon-14-labeled LOXO-305 in healthy males.

Is LOXO-305 the same as pirtobrutinib?

Yes, LOXO-305 is also known as pirtobrutinib. One clinical trial, NCT06180954, explicitly refers to LOXO-305 as pirtobrutinib. This alternative name may be used in scientific literature and other contexts.