Lyell Immunopharma Reports Business Highlights and Financial Results for the First Quarter 2024

On May 6, 2024 Lyell Immunopharma, Inc. (Nasdaq: LYEL), a clinical‑stage T-cell reprogramming company advancing a diverse pipeline of cell therapies for patients with solid tumors, reported financial results and business highlights for the first quarter ended March 31, 2024 (Press release, Lyell Immunopharma, MAY 6, 2024, View Source [SID1234642679]).

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"The initial clinical and translational data from the Phase 1 trial of LYL797, our lead CAR T-cell product candidate, will provide the first insights into our ability to reprogram ROR1 CAR T cells that can expand, infiltrate solid tumors and kill cancer cells in patients," said Lynn Seely, M.D., Lyell’s President and CEO. "Our strong cash position is expected to fund operations through multiple milestones into 2027, including initial clinical data from our lead TIL program in the second half of this year, and to the continued advancement of multiple product candidates with potential to offer better options for patients with cancer."

First Quarter Updates and Recent Business Highlights

Lyell is advancing four wholly-owned product candidates. Two product candidates, LYL797 and LYL845 are in Phase 1 clinical development. Two additional product candidates, LYL119, a ROR1-targeted Chimeric Antigen Receptor (CAR) T‑cell product candidate and a second-generation tumor infiltrating lymphocyte (TIL) product candidate, are in preclinical development.

LYL797 – A ROR1-targeted CAR T-cell product candidate genetically reprogrammed to overexpress c-Jun and epigenetically reprogrammed using Lyell’s proprietary Epi-R manufacturing protocol designed for differentiated potency and durability

Enrollment in the Phase 1 clinical trial of LYL797 is ongoing. The study includes patients with relapsed or refractory triple-negative breast cancer (TNBC) or non-small cell lung cancer (NSCLC).
Initial data from at least 20 patients from the Phase 1 clinical trial of LYL797 are expected this quarter.
LYL845 – A TIL product candidate epigenetically reprogrammed using Lyell’s proprietary Epi-R manufacturing protocol, designed for differentiated potency and durability

Enrollment in the Phase 1 clinical trial of LYL845 is ongoing. The study includes patients with relapsed or refractory metastatic or locally advanced melanoma, NSCLC and colorectal cancer.
Initial clinical and translational data from the Phase 1 trial of LYL845 are expected in the second half of 2024.
LYL119 – A ROR1-targeted CAR T-cell product candidate incorporating Lyell’s four stackable and complementary reprogramming technologies designed for enhanced cytotoxicity

LYL119 is a ROR1-targeted CAR T-cell product enhanced with Lyell’s four novel genetic and epigenetic reprogramming technologies: c-Jun overexpression, NR4A3 knockout, Epi-R manufacturing protocol and Stim‑R T-cell activation technology.
An investigational new drug (IND) application for LYL119 is expected to be submitted this quarter.
Presented a poster with new nonclinical data on LYL119 at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2024. In this study, LYL119, compared to ROR1 CAR T cells reprogrammed with only two or three technologies, demonstrated reduced CAR T‑cell exhaustion, enhanced CAR T‑cell function, enhanced proliferation capacity and sustained antitumor activity in a mouse xenograft tumor model across a 10-fold dose range, including at very low cell doses. In addition, following repeated rounds of tumor cell killing, LYL119 displayed reduced expression of exhaustion-related gene signatures and retained unique cell subsets characterized by upregulation of memory and effector-associated gene signatures.
First Quarter Financial Results

Lyell reported a net loss of $60.7 million for the first quarter ended March 31, 2024, compared to a net loss of $67.0 million for the same period in 2023. Non‑GAAP net loss, which excludes non-cash stock-based compensation, non‑cash expenses related to the change in the estimated fair value of success payment liabilities and certain non-cash investment gains and charges, was $37.5 million for the first quarter ended March 31, 2024, compared to $44.8 million for the same period in 2023.

GAAP and Non-GAAP Operating Expenses

Research and development (R&D) expenses were $43.2 million for the first quarter ended March 31, 2024, compared to $44.6 million for the same period in 2023. The decrease in first quarter 2024 R&D expenses of $1.5 million was primarily driven by a decrease in personnel-related expenses associated with Lyell’s November 2023 reduction in workforce. Non‑GAAP R&D expenses, which exclude non-cash stock-based compensation and non-cash expenses related to the change in the estimated fair value of success payment liabilities for the first quarter ended March 31, 2024, were $38.9 million, compared to $40.6 million for the same period in 2023. The decrease in first quarter 2024 non-GAAP R&D expenses was primarily driven by a decrease in personnel-related expenses.
General and administrative (G&A) expenses were $13.5 million for the first quarter ended March 31, 2024, compared to $19.3 million for the same period in 2023. The decrease in first quarter 2024 G&A expenses was primarily driven by decreases in non-cash stock-based compensation. Non‑GAAP G&A expenses, which exclude non-cash stock‑based compensation, for the first quarter ended March 31, 2024, were $8.1 million, compared to $10.0 million for the same period in 2023. The decrease in 2024 non-GAAP G&A expenses was primarily driven by a decrease in personnel-related expenses associated with Lyell’s November 2023 reduction in workforce.
A discussion of non-GAAP financial measures, including reconciliations of the most comparable GAAP measures to non‑GAAP financial measures, is presented below under "Non-GAAP Financial Measures."

Cash, cash equivalents and marketable securities

Cash, cash equivalents and marketable securities as of March 31, 2024, were $526.3 million, compared to $562.7 million as of December 31, 2023. Lyell believes that its cash, cash equivalents and marketable securities balances will be sufficient to meet working capital and capital expenditure needs into 2027.