DUBLIN / Feb 15, 2024 / Business Wire / Prothena Corporation plc (NASDAQ:PRTA), a late-stage clinical biotechnology company with a robust pipeline of investigational therapeutics built on protein dysregulation expertise, today reported financial results for the fourth quarter and full year 2023. In addition, the Company provided 2024 financial guidance and business highlights.
“2023 was a year of strong progress for Prothena as we advanced our protein dysregulation portfolio and moved closer to becoming a fully integrated commercial company. The next 12 to 18 months have the potential to transform Prothena with multiple upcoming clinical readouts across our robust portfolio,” said Gene Kinney, Ph.D., President and Chief Executive Officer, Prothena. “We continue to advance our confirmatory Phase 3 AFFIRM-AL clinical trial for birtamimab and for PRX012 are evaluating multiple dose level cohorts in our ongoing Phase 1 clinical trial. In addition, we ended the year with IND clearances by the FDA for both PRX123 and PRX019, including Fast Track designation for PRX123. As we continue to grow our leadership at Prothena, we also appointed the founding, former Director of the FDA CDER Office of Neuroscience, Dr. Billy Dunn, to our board of directors. Dr. Dunn brings immeasurable regulatory and clinical development expertise, combined with a passion for helping patients, which will greatly benefit the millions of people affected by diseases caused by protein dysregulation. Lastly, Prothena remains well financed with sufficient capital to ensure funding of activities beyond the completion of ongoing clinical trials.”
2023 Business Highlights and Upcoming Milestones
Neurodegenerative Diseases Portfolio
Alzheimer’s Disease
PRX012, a wholly-owned potential best-in-class, next-generation subcutaneous antibody for the treatment of Alzheimer’s disease that targets a key epitope at the N-terminus of amyloid beta (Aβ) with high binding potency. The U.S. Food and Drug Administration (FDA) has granted Fast Track designation for PRX012 for the treatment of Alzheimer’s disease.
BMS-986446 (formerly PRX005), a potential best-in-class antibody for the treatment of Alzheimer’s disease that specifically targets a key epitope within the microtubule binding region (MTBR) of tau, a protein implicated in the causal pathophysiology of Alzheimer’s disease. BMS-986446 is part of a Global Neuroscience Research and Development Collaboration with Bristol Myers Squibb.
PRX123, a wholly-owned potential first-in-class dual Aβ/tau vaccine designed for the treatment and prevention of Alzheimer’s disease, is a dual-target vaccine targeting key epitopes within the N-terminus of Aβ and MTBR-tau designed to promote amyloid clearance and block the transmission of pathogenic tau
Parkinson’s Disease
Prasinezumab, a potential first-in-class antibody for the treatment of Parkinson’s disease that is designed to target key epitopes within the C-terminus of alpha-synuclein, and is the focus of a worldwide collaboration with Roche
Neurodegenerative Diseases
PRX019, a potential treatment of neurodegenerative diseases with an undisclosed target, is part of a Global Neuroscience Research and Development Collaboration with Bristol Myers Squibb.
Rare Peripheral Amyloid Diseases Portfolio
AL Amyloidosis
Birtamimab, a wholly-owned potential best-in-class amyloid depleter antibody for the treatment of AL amyloidosis designed to directly neutralize soluble toxic light chain aggregates and promote clearance of amyloid that causes organ dysfunction and failure. Among patients with AL amyloidosis, a rare, progressive, and fatal disease, newly diagnosed individuals with advanced disease (e.g., Mayo Stage IV) are at the highest risk for early death. Birtamimab has been granted Fast Track designation by the FDA for the treatment of patients with Mayo Stage IV AL amyloidosis to reduce the risk of mortality and has been granted Orphan Drug Designation by both the FDA and European Medicines Agency. A significant survival benefit was observed in the post hoc analysis of birtamimab-treated patients categorized as Mayo Stage IV at baseline in the previous Phase 3 VITAL clinical trial (Blood 2023).
ATTR Amyloidosis
NNC6019 (formerly PRX004), a potential first-in-class amyloid depleter antibody for the treatment of ATTR cardiomyopathy designed to deplete the pathogenic, non-native forms of the transthyretin (TTR) protein and is being developed by Novo Nordisk as part of their up to $1.2 billion acquisition of Prothena’s ATTR amyloidosis business and pipeline
2023 Organizational and Corporate Highlights
Fourth Quarter and Full Year of 2023 Financial Results
For the fourth quarter and full year of 2023, Prothena reported a net loss of $67.5 million and $147.0 million, respectively, as compared to a net income of $6.3 million and a net loss of $116.9 million for the fourth quarter and full year of 2022, respectively. Net loss per share was $1.26 and $2.76 for the fourth quarter of 2023 and for the full year of 2023, respectively, as compared to net income per share on a diluted basis of $0.12 and net loss per share of $2.47 for the fourth quarter and full year of 2022, respectively.
Prothena reported total revenue of $0.3 million and $91.4 million for the fourth quarter and full year of 2023, respectively, as compared to total revenue of $49.9 million and $53.9 million for the fourth quarter and full year of 2022, respectively. Total revenue for the fourth quarter and full year of 2023 included BMS collaboration revenue of $0.3 million and $91.3 million, respectively. The full year includes the $55 million option payment from BMS related to their exercise of their option to acquire the exclusive worldwide rights for BMS-986446 (formerly PRX005). This compares to total revenue for the fourth quarter of 2022 and the full year of 2022 that included BMS collaboration revenue of $9.9 million and $13.9 million, respectively and a $40.0 million milestone payment from Novo Nordisk related to the continued advancement of NNC6019 (formerly PRX004) in a Phase 2 clinical trial for the treatment of ATTR cardiomyopathy in the fourth quarter of 2022 and the full year of 2022.
Research and development (R&D) expenses totaled $61.9 million and $220.6 million for the fourth quarter and full year of 2023, respectively, as compared to $36.9 million and $135.6 million for the fourth quarter and full year of 2022, respectively. The increase in R&D expense for the fourth quarter and full year of 2023 compared to the same periods in the prior year was primarily due to higher clinical trial expenses, higher personnel related expenses, higher consulting and other R&D expenses. R&D expenses included non-cash share-based compensation expense of $5.0 million and $19.2 million for the fourth quarter and full year of 2023, respectively, as compared to $3.5 million and $14.8 million for the fourth quarter and full year of 2022, respectively.
General and administrative (G&A) expenses totaled $16.9 million and $61.8 million for the fourth quarter and full year of 2023, respectively, as compared to $13.1 million and $49.9 million for the fourth quarter and full year of 2022, respectively. The increase in G&A expenses for the fourth quarter and full year of 2023 compared to the same periods in the prior year was primarily related to higher personnel related and consulting expenses. G&A expenses included non-cash share-based compensation expense of $6.0 million and $21.7 million for the fourth quarter and full year of 2023, respectively, as compared to $3.9 million and $16.5 million for the fourth quarter and full year of 2022, respectively.
Total non-cash share-based compensation expense was $11.1 million and $40.9 million for the fourth quarter and full year of 2023, respectively, as compared to $7.4 million and $31.3 million for the fourth quarter and full year of 2022, respectively. As of December 31, 2023, Prothena had $621.0 million in cash, cash equivalents and restricted cash, and no debt.
As of February 9, 2024, Prothena had approximately 53.7 million ordinary shares outstanding.
2024 Financial Guidance
The Company expects the full year 2024 net cash used in operating and investing activities to be $208 to $225 million and expects to end the year with approximately $405 million in cash, cash equivalents and restricted cash (midpoint). The estimated full year 2024 net cash used in operating and investing activities is primarily driven by an estimated net loss of $229 to $255 million, which includes an estimated $51 million of non-cash share-based compensation expense.
Conference Call Details
Prothena management will discuss these results and its 2024 financial guidance during a live audio conference call today, Thursday, February 15, 2024, at 4:30 PM ET. The conference call will be made available on the Company's website at www.prothena.com under the Investors tab in the Events and Presentations section. Following the live audio webcast, a replay will be available on the Company's website for at least 90 days.
To access the call via dial-in, please dial +1 (800) 715-9871 (U.S. and Canada toll free) or +1 (646) 307-1963 (international) five minutes prior to the start time and refer to conference ID number 1706941. A replay of the call will be available until February 22, 2024, via dial-in at +1 (800) 770-2030 (U.S. and Canada toll free) or +1 (609) 800-9909 (international), Conference ID Number 1706941.
About Prothena
Prothena Corporation plc is a late-stage clinical biotechnology company with expertise in protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating neurodegenerative and rare peripheral amyloid diseases. Fueled by its deep scientific expertise built over decades of research, Prothena is advancing a pipeline of therapeutic candidates for a number of indications and novel targets for which its ability to integrate scientific insights around neurological dysfunction and the biology of misfolded proteins can be leveraged. Prothena’s pipeline includes both wholly-owned and partnered programs being developed for the potential treatment of diseases including AL amyloidosis, ATTR amyloidosis, Alzheimer’s disease, Parkinson’s disease and a number of other neurodegenerative diseases. For more information, please visit the Company’s website at www.prothena.com and follow the Company on Twitter @ProthenaCorp.
Forward-Looking Statements
This press release contains forward-looking statements. These statements relate to, among other things, the sufficiency of our cash position to fund advancement of a broad pipeline and completion of our ongoing clinical trials; the continued advancement of our discovery, preclinical, and clinical pipeline, and expected milestones in 2024, 2025, and beyond; the treatment potential, designs, proposed mechanisms of action, and potential administration of PRX012, BMS-986446/PRX005, PRX123, prasinezumab, birtamimab, and NNC6019/PRX004; plans for ongoing and future clinical trials of PRX012, BMS-986446/PRX005, PRX123, prasinezumab, PRX019, birtamimab, and NNC6019/PRX004; the expected timing of reporting data from clinical trials, including any updates regarding our ongoing Phase 1 clinical trial evaluating PRX012 in 2024 and topline study results for our Phase 3 AFFIRM-AL clinical trial between 4Q 2024 and 2Q 2025; and our anticipated net cash burn from operating and investing activities for 2024 and expected cash balance at the end of 2024; and our estimated net loss and non-cash share-based compensation expense for 2024. These statements are based on estimates, projections and assumptions that may prove not to be accurate, and actual results could differ materially from those anticipated due to known and unknown risks, uncertainties and other factors, including but not limited to uncertainties related to the completion of operational and financial closing procedures, audit adjustments and other developments that may arise that would require adjustments to the preliminary financial results included in this press release, as well as those described in the “Risk Factors” sections of our Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (SEC) on November 2, 2023, discussions of potential risks, uncertainties, and other important factors in our subsequent filings with the SEC, and our Annual Report on Form 10-K to be filed with the SEC for our fiscal year 2023. We undertake no obligation to update publicly any forward-looking statements contained in this press release as a result of new information, future events, or changes in our expectations.
PROTHENA CORPORATION PLC CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited - amounts in thousands except per share data) | ||||||||||||||||
|
| Three Months Ended |
| Year Ended December 31, | ||||||||||||
|
|
| 2023 |
|
|
| 2022 |
|
|
| 2023 |
|
|
| 2022 |
|
Collaboration revenue |
| $ | 316 |
|
| $ | 9,923 |
|
| $ | 91,320 |
|
| $ | 13,855 |
|
Revenue from license and intellectual property |
|
| — |
|
|
| 40,000 |
|
|
| 50 |
|
|
| 40,050 |
|
Total revenue |
|
| 316 |
|
|
| 49,923 |
|
|
| 91,370 |
|
|
| 53,905 |
|
Operating expenses: |
|
|
|
|
|
|
|
| ||||||||
Research and development |
|
| 61,891 |
|
|
| 36,871 |
|
|
| 220,571 |
|
|
| 135,562 |
|
General and administrative |
|
| 16,940 |
|
|
| 13,124 |
|
|
| 61,835 |
|
|
| 49,900 |
|
Total operating expenses |
|
| 78,831 |
|
|
| 49,995 |
|
|
| 282,406 |
|
|
| 185,462 |
|
Income (loss) from operations |
|
| (78,515 | ) |
|
| (72 | ) |
|
| (191,036 | ) |
|
| (131,557 | ) |
Other income (expense), net |
|
| 7,897 |
|
|
| 3,417 |
|
|
| 30,556 |
|
|
| 5,952 |
|
Income (loss) before income taxes |
|
| (70,618 | ) |
|
| 3,345 |
|
|
| (160,480 | ) |
|
| (125,605 | ) |
Provision for (benefit from) income taxes |
|
| (3,142 | ) |
|
| (3,004 | ) |
|
| (13,452 | ) |
|
| (8,656 | ) |
Net income (loss) |
| $ | (67,476 | ) |
| $ | 6,349 |
|
| $ | (147,028 | ) |
| $ | (116,949 | ) |
Basic net income (loss) per ordinary share |
| $ | (1.26 | ) |
| $ | 0.13 |
|
| $ | (2.76 | ) |
| $ | (2.47 | ) |
Diluted net income (loss) per ordinary share |
| $ | (1.26 | ) |
| $ | 0.12 |
|
| $ | (2.76 | ) |
| $ | (2.47 | ) |
Shares used to compute basic net income (loss) per share |
|
| 53,668 |
|
|
| 48,960 |
|
|
| 53,216 |
|
|
| 47,369 |
|
Shares used to compute diluted net income (loss) per share |
|
| 53,668 |
|
|
| 53,979 |
|
|
| 53,216 |
|
|
| 47,369 |
|
PROTHENA CORPORATION PLC CONSOLIDATED BALANCE SHEETS (unaudited - amounts in thousands) | |||||
| December 31, | ||||
| 2023 |
| 2022 | ||
Assets |
|
|
| ||
Cash and cash equivalents | $ | 618,830 |
| $ | 710,406 |
Restricted cash, current |
| 1,352 |
|
| — |
Prepaid expenses and other current assets |
| 19,100 |
|
| 8,692 |
Total current assets |
| 639,282 |
|
| 719,098 |
Property and equipment, net |
| 3,836 |
|
| 1,731 |
Operating lease right-of-use assets |
| 12,162 |
|
| 6,277 |
Restricted cash, non-current |
| 860 |
|
| 2,212 |
Other non-current assets |
| 40,242 |
|
| 28,717 |
Total non-current assets |
| 57,100 |
|
| 38,937 |
Total assets | $ | 696,382 |
| $ | 758,035 |
Liabilities and Shareholders’ Equity |
|
|
| ||
Accrued research and development |
| 14,724 |
|
| 10,794 |
Deferred revenue, current |
| — |
|
| 11,442 |
Lease liability, current |
| 1,114 |
|
| 6,473 |
Other current liabilities |
| 41,053 |
|
| 21,438 |
Total current liabilities |
| 56,891 |
|
| 50,147 |
Deferred revenue, non current |
| 67,405 |
|
| 85,293 |
Lease liability, non-current |
| 10,721 |
|
| — |
Other non-current liabilities |
| — |
|
| 553 |
Total non-current liabilities |
| 78,126 |
|
| 85,846 |
Total liabilities |
| 135,017 |
|
| 135,993 |
Total shareholders’ equity |
| 561,365 |
|
| 622,042 |
Total liabilities and shareholders’ equity | $ | 696,382 |
| $ | 758,035 |
Last Trade: | US$14.40 |
Daily Change: | 0.35 2.49 |
Daily Volume: | 624,278 |
Market Cap: | US$774.430M |
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