Siglec-6

SAN CARLOS, Calif., Nov. 06, 2024 (GLOBE NEWSWIRE) -- Allakos Inc. (the “Company”) (Nasdaq: ALLK), a biotechnology company developing antibodies for the treatment of allergic, inflammatory and proliferative diseases, today provided a business update and reported financial results for the third quarter ended September 30, 2024. Recent Allakos Events Reported safety, pharmacokinetics (PK), and pharmacodynamic (PD) results from the Phase 1 trial of subcutaneous (SC) AK006 in healthy volunteers. Bioavailability of subcutaneous AK006 was approximately 77%.Subcutaneous administered AK006 showed an estimated half-life of 12-22 days.Consistent with the IV formulation, skin biopsies taken from subcutaneous AK006 treated healthy volunteers showed high levels of receptor occupancy confirming AK006 reaches skin tissue mast cells.The 720 mg dose of AK006 showed 98% receptor occupancy at day 113 suggesting the potential for infrequent dosing.Single and multiple doses of IV AK006 and single dose subcutaneous AK006 up to 720 mg were well tolerated with a favorable safety profile. Completed enrollment of over 30 patients in the randomized, double-blind, placebo-controlled Phase 1 trial of intravenous (IV) AK006 in patients with chronic spontaneous urticaria. Data from these patients expected in early Q1 of 2025. Upcoming Allakos Anticipated Milestones Report randomized double-blind, placebo-controlled data on over 30 patients from the Phase 1 trial of AK006 in patients with CSU in early Q1 of 2025. Cash Guidance Allakos ended the third quarter of 2024 with $92.7 million in cash, cash equivalents and investments. Allakos’ financial outlook, restructuring activities and estimated cash runway as reported by the Company in January 2024 remain unchanged. The Company reiterates that it expects the restructuring activities will extend the cash runway into mid-2026 and to end 2024 with total cash, cash equivalents and investments in its previously stated $81 to $86 million guidance range. The Company has substantially completed its exit of the lirentelimab development program. Third Quarter 2024 Financial Results Allakos ended the third quarter of 2024 with $92.7 million in cash, cash equivalents and investments resulting in a net decrease in cash, cash equivalents and investments of $30.4 million during the third quarter of 2024. Approximately $18 million of this third quarter decrease was paid in connection with exiting the lirentelimab development program. Research and development expenses were $10.9 million in the third quarter of 2024 compared to $36.7 million in the third quarter of 2023, a decrease of $25.8 million. This quarter over quarter decrease is attributed to $16.4 million of lower contract research and development costs, primarily due to halting lirentelimab development and includes a $4.6 million decrease relating to a change in estimated manufacturing costs upon resolution of the related work orders with the vendor, $5.7 million of decreased compensation costs and a $3.7 million decrease in other research and development expenses. General and administrative expenses were $8.9 million for the third quarter of 2024 compared to $11.5 million for the third quarter of 2023, a decrease of $2.6 million. The quarter over quarter change included $2.4 million of decreased compensation costs and $0.2 million of decreased other general and administrative expenses. Allakos reported a net loss of $18.4 million in the third quarter of 2024 compared to $45.6 million in the third quarter of 2023. Net loss per basic and diluted share was $0.21 for the third quarter of 2024 compared to $0.52 in the third quarter of 2023. About Allakos Allakos is a clinical stage biotechnology company developing therapeutics that target immunomodulatory receptors present on immune effector cells involved in allergy, inflammatory and proliferative diseases. Activating these immunomodulatory receptors allows for the direct targeting of cells involved in disease pathogenesis and, in the setting of allergy and inflammation, has the potential to result in broad inhibition of inflammatory cells. The Company’s most advanced product candidate is AK006. AK006 targets Siglec-6, an inhibitory receptor expressed on mast cells. Mast cells are widely distributed in the body and play a central role in the inflammatory response. Inappropriately activated mast cells have been identified as key drivers in a number of severe diseases affecting the gastrointestinal tract, eyes, skin, lungs and other organs. In preclinical studies, AK006 appears to provide deep mast cell inhibition and, in addition to its inhibitory activity, reduce mast cell numbers. For more information, please visit the Company’s website at www.allakos.com. Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 as contained in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include, but are not limited to, Allakos’ expected timing of reporting data from its clinical trial of AK006; cash guidance and runway; and restructuring. Such statements are subject to numerous important factors, risks and uncertainties that may cause actual events or results to differ materially from current expectations and beliefs, including but not limited to: Allakos’ stages of clinical drug development; Allakos’ ability to timely initiate and complete clinical trials for AK006; Allakos’ ability to obtain required regulatory approvals for its clinical trials; uncertainties related to the enrollment of patients in its clinical trials; Allakos’ ability to demonstrate sufficient safety and efficacy of its product candidates in its clinical trials; uncertainties related to the success of clinical trials, regardless of the outcomes of preclinical testing or early-stage trials; Allakos’ ability to obtain regulatory approvals to market its product candidates; market acceptance of Allakos’ product candidates; uncertainties related to the projections of the size of patient populations suffering from the diseases Allakos is targeting; Allakos’ ability to advance additional product candidates beyond AK006; uncertainties related to Allakos’ ability to realize the contemplated benefits of its restructuring and related reduction in force; Allakos’ ability to accurately forecast financial results; Allakos’ ability to obtain additional capital to finance its operations, research and drug development; Allakos’ ability to maintain the listing of our common stock on Nasdaq; general economic and market conditions, both domestic and international; domestic and international regulatory obligations; and other risks. Information regarding the foregoing and additional risks may be found in the section entitled “Risk Factors” in documents that Allakos files from time to time to with the SEC. These documents contain and identify important factors that could cause the actual results for Allakos to differ materially from those contained in Allakos’ forward-looking statements. Any forward-looking statements contained in this press release speak only as of the date hereof, and Allakos specifically disclaims any obligation to update any forward-looking statement, except as required by law. These forward-looking statements should not be relied upon as representing Allakos’ views as of any date subsequent to the date of this press release. Source: Allakos Inc. Investor Contact:Adam Tomasi, PresidentAlex Schwartz, VP Strategic Finance and Investor Relationsir@allakos.com Media Contact:media@allakos.com ALLAKOS INC.UNAUDITED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS(in thousands, except per share data) Three Months Ended Nine Months Ended September 30, September 30, 2024 2023 2024 2023 Operating expenses Research and development $10,874 $36,749 $65,120 $97,107 General and administrative 8,876 11,461 28,985 33,966 Impairment of long-lived assets — — 27,347 — Total operating expenses 19,750 48,210 121,452 131,073 Loss from operations (19,750) (48,210) (121,452) (131,073)Interest income 1,392 2,590 5,346 7,965 Other expense, net (14) (6) (88) (42)Net loss (18,372) (45,626) (116,194) (123,150)Unrealized gain (loss) on investments 325 87 284 212 Comprehensive loss $(18,047) $(45,539) $(115,910) $(122,938)Net loss per common share: Basic and diluted $(0.21) $(0.52) $(1.31) $(1.42)Weighted-average number of commonshares outstanding: Basic and diluted 89,024 87,115 88,571 86,539 ALLAKOS INC.UNAUDITED CONDENSED BALANCE SHEETS(in thousands) September 30, December 31, 2024 2023 Assets Current assets: Cash and cash equivalents $10,449 $66,440 Investments 82,266 104,354 Prepaid expenses and other current assets 4,438 9,095 Total current assets 97,153 179,889 Property and equipment, net 15,733 33,369 Operating lease right-of-use assets 9,880 24,136 Other long-term assets 1,668 6,216 Total assets $124,434 $243,610 Liabilities and stockholders’ equity Current liabilities: Accounts payable $3,964 $1,764 Accrued expenses and other current liabilities 12,017 34,814 Total current liabilities 15,981 36,578 Operating lease liabilities, net of current portion 35,710 38,215 Total liabilities 51,691 74,793 Stockholders’ equity: Common stock 89 88 Additional paid-in capital 1,306,991 1,287,156 Accumulated other comprehensive gain (loss) 334 50 Accumulated deficit (1,234,671) (1,118,477) Total stockholders’ equity 72,743 168,817 Total liabilities and stockholders’ equity $124,434 $243,610

– Subcutaneously administered AK006 showed approximately 77% bioavailability and prolonged receptor occupancy on mast cells – – Subcutaneous AK006 was well-tolerated with a favorable safety profile – – Top-line Phase 1 results of Intravenous AK006 in patients with CSU are expected in early Q1 of 2025 – SAN CARLOS, Calif., Oct. 10, 2024 (GLOBE NEWSWIRE) -- Allakos Inc. (Nasdaq: ALLK), a biotechnology company developing AK006 for the treatment of mast cell-driven diseases, today announced results from the Phase 1 study of subcutaneous AK006 in healthy volunteers. AK006 is a Siglec-6 monoclonal antibody that selectively inhibits mast cells. Inappropriate activation of mast cells has been identified as a pathogenic driver of multiple diseases, including chronic spontaneous urticaria, food allergy and asthma. Phase 1 Study Results of Subcutaneous AK006 in Healthy Volunteers Bioavailability of subcutaneous AK006 was approximately 77%. Subcutaneous administered AK006 showed an estimated half-life of 12-22 days. Consistent with the IV formulation, skin biopsies taken from subcutaneous AK006 treated healthy volunteers showed high levels of receptor occupancy confirming AK006 reaches skin tissue mast cells. The 720 mg dose of AK006 showed 98% receptor occupancy at day 113 suggesting the potential for infrequent dosing. Single and multiple doses of IV AK006 and single dose subcutaneous AK006 up to 720 mg were well-tolerated with a favorable safety profile. In the safety pro date: There were no serious adverse events (SAEs) in subjects on AK006. There were no treatment emergent adverse events leading to discontinuation of AK006. There were no dose limiting toxicities. The most common adverse events (≥10%) occurring more frequently in subjects on AK006 were headache and dysmenorrhea, all of which were mild-to-moderate in severity. Phase 1 AK006 Study in Healthy Volunteers and in Patients with Chronic Spontaneous Urticaria AK006 is being studied in an ongoing Phase 1 single ascending dose (SAD) and multiple ascending dose (MAD) trial that includes a randomized, double-blind, placebo-controlled CSU arm (NCT06072157). In June 2024 the company reported data from the SAD and MAD IV cohorts of the study. The data announced today are from the randomized, double-blind, placebo-controlled SAD subcutaneous cohorts of the study. In these cohorts, healthy volunteers were randomized 6:2 to receive doses of subcutaneous AK006 or placebo. Two dosed levels, 150 mg and 720 mg, of subcutaneous AK006 were tested. The primary objective was to evaluate the safety and tolerability of single subcutaneous doses of AK006 in healthy volunteers, establish the bioavailability and pharmacokinetics of subcutaneous AK006, and to explore Siglec-6 receptor occupancy on mast cells in skin biopsy samples. In the CSU arm of the Phase 1 study, up to 60 adult patients with antihistamine refractory CSU (including patients with prior biologics treatment), will be randomized 2:1 to receive 720 mg of IV AK006 or placebo once every four weeks (Q4W). The primary efficacy analysis will be the change in the urticaria activity score (UAS7) at week 14. Data from approximately 30 patients is expected in early Q1 of 2025. About AK006 AK006 is a humanized IgG1 monoclonal antibody which activates the inhibitory receptor Siglec-6. Siglec-6 is found on the surface of mature mast cells and offers a way to selectively target mast cells. In preclinical experiments, AK006 inhibits IgE-dependent and IgE-independent mast cell activation including activation through IgE, MRGPRX2 and KIT receptors. In these experiments, AK006 drives deep mast cell inhibition and, in addition to its inhibitory activity, can reduce mast cell numbers via antibody-dependent cellular phagocytosis in the presence of activated macrophages. About Allakos Allakos is a clinical stage biotechnology company developing therapeutics that target immunomodulatory receptors present on immune effector cells involved in allergy, inflammatory and proliferative diseases. Activating these immunomodulatory receptors allows for the direct targeting of cells involved in disease pathogenesis and, in the setting of allergy and inflammation, has the potential to result in broad inhibition of inflammatory cells. The Company’s most advanced antibody in ongoing clinical development is AK006. AK006 targets Siglec-6, an inhibitory receptor expressed on mast cells. Mast cells are widely distributed in the body and play a central role in the inflammatory response. Inappropriately activated mast cells have been identified as key drivers in a number of severe diseases affecting the gastrointestinal tract, eyes, skin, lungs and other organs. In preclinical studies, AK006 appears to provide deep mast cell inhibition and, in addition to its inhibitory activity, reduce mast cell numbers. For more information, please visit the Company’s website at Forward-Looking Statements This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 as contained in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include, but are not limited to, Allakos’ progress, business plans, areas of focus and preclinical research; enrollment in Allakos’s clinical study; timing and availability of data; the potential of AK006; and Allakos’ anticipated milestones. Such statements are subject to numerous important factors, risks and uncertainties that may cause actual events or results to differ materially from current expectations and beliefs, including but not limited to: Allakos’ stages of clinical drug development; Allakos’ ability to timely initiate and complete clinical trials for AK006; Allakos’ ability to obtain required regulatory approvals for its clinical trials; uncertainties related to the enrollment of patients in its clinical trials; Allakos’ ability to demonstrate sufficient safety and efficacy of its product candidates in its clinical trials; uncertainties related to the success of clinical trials, regardless of the outcomes of preclinical testing or early-stage trials; Allakos’ ability to advance additional product candidates beyond AK006; uncertainties related to Allakos’ ability to realize the contemplated benefits of its restructuring and related reduction in force; Allakos’ ability to accurately forecast financial results; Allakos’ ability to obtain additional capital to finance its operations, research and drug development; general economic and market conditions, both domestic and international; domestic and international regulatory obligations; and other risks. Information regarding the foregoing and additional risks may be found in the section entitled “Risk Factors” in documents that Allakos files from time to time with the SEC. These documents contain and identify important factors that could cause the actual results for Allakos to differ materially from those contained in Allakos’ forward-looking statements. Any forward-looking statements contained in this press release speak only as of the date hereof, and Allakos specifically disclaims any obligation to update any forward-looking statement, except as required by law. These forward-looking statements should not be relied upon as representing Allakos’ views as of any date subsequent to the date of this press release. Source: Allakos Inc. Investor Contact: Adam Tomasi, President Alex Schwartz, VP Strategic Finance and Investor Relations ir@allakos.com Media Contact: Denise Powell denise@redhousecomms.com

SAN CARLOS, Calif., Aug. 07, 2024 (GLOBE NEWSWIRE) -- Allakos Inc. (the “Company”) (Nasdaq: ALLK), a biotechnology company developing antibodies for the treatment of allergic, inflammatory and proliferative diseases, today provided a business update and reported financial results for the second quarter ended June 30, 2024. Recent Allakos Events Initiated the randomized, double-blind, placebo-controlled Phase 1 trial of intravenous (IV) AK006 in patients with chronic spontaneous urticaria.Completed dosing in the randomized, double-blind, placebo-controlled subcutaneous (SC) AK006 cohort in healthy volunteers.Reported safety, pharmacokinetics (PK), and pharmacodynamic (PD) results from the Phase 1 trial of IV AK006 in healthy volunteers.Presented preclinical data at the 2024 European Academy of Allergy and Clinical Immunology (EAACI) Annual Congress on mast cell inhibition with AK006. Upcoming Allakos Anticipated Milestones Report safety, PK, and PD results from the Phase 1 trial of SC AK006 in healthy volunteers in Q3 2024.Report randomized double-blind, placebo-controlled data from the Phase 1 trial of AK006 in patients with CSU at year end 2024. Cash GuidanceAllakos ended the second quarter of 2024 with $123.1 million in cash, cash equivalents and investments. Allakos’ financial outlook, restructuring activities and estimated cash runway as reported by the Company in January 2024 remain unchanged. The Company reiterates that the restructuring activities will extend the cash runway into mid-2026 and continues to expect to end 2024 with total cash, cash equivalents and investments in the range of $81 to $86 million. The Company reiterates that an estimated $30 million of closeout, severance and other costs will be paid in 2024 in connection with exiting the lirentelimab development program, of which we have spent $13 million to date in the first six months of 2024. Approximately $1 million of these payments were made in the second quarter of 2024. Second Quarter 2024 Financial ResultsAllakos ended the second quarter of 2024 with $123.1 million in cash, cash equivalents and investments resulting in a net decrease in cash, cash equivalents and investments of $16.2 million during the second quarter of 2024. Research and development expenses were $19.4 million in the second quarter of 2024 compared to $27.3 million in the second quarter of 2023, a decrease of $7.9 million. This quarter over quarter decrease is attributed to $2.5 million of lower contract research and development costs, primarily due to halting lirentelimab development, $2.5 million of decreased compensation costs and a $2.9 million decrease in other research and development expenses. General and administrative expenses were $9.2 million for the second quarter of 2024 compared to $10.5 million for the second quarter of 2023, a decrease of $1.3 million. The quarter over quarter change included $0.7 million of decreased compensation costs and $0.6 million of decreased other general and administrative expenses. Allakos reported a net loss of $26.7 million in the second quarter of 2024 compared to $35.1 million in the second quarter of 2023. Net loss per basic and diluted share was $0.30 for the second quarter of 2024 compared to $0.41 in the second quarter of 2023. About AllakosAllakos is a clinical stage biotechnology company developing therapeutics that target immunomodulatory receptors present on immune effector cells involved in allergy, inflammatory and proliferative diseases. Activating these immunomodulatory receptors allows for the direct targeting of cells involved in disease pathogenesis and, in the setting of allergy and inflammation, has the potential to result in broad inhibition of inflammatory cells. The Company’s most advanced product candidate is AK006. AK006 targets Siglec-6, an inhibitory receptor expressed on mast cells. Mast cells are widely distributed in the body and play a central role in the inflammatory response. Inappropriately activated mast cells have been identified as key drivers in a number of severe diseases affecting the gastrointestinal tract, eyes, skin, lungs and other organs. In preclinical studies, AK006 appears to provide deep mast cell inhibition and, in addition to its inhibitory activity, reduce mast cell numbers. For more information, please visit the Company’s website at www.allakos.com. Forward-Looking StatementsThis press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 as contained in Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include, but are not limited to, Allakos’ expected timing of reporting data from its clinical trial of AK006; cash guidance and runway; and restructuring. Such statements are subject to numerous important factors, risks and uncertainties that may cause actual events or results to differ materially from current expectations and beliefs, including but not limited to: Allakos’ stages of clinical drug development; Allakos’ ability to timely initiate and complete clinical trials for AK006; Allakos’ ability to obtain required regulatory approvals for its clinical trials; uncertainties related to the enrollment of patients in its clinical trials; Allakos’ ability to demonstrate sufficient safety and efficacy of its product candidates in its clinical trials; uncertainties related to the success of clinical trials, regardless of the outcomes of preclinical testing or early-stage trials; Allakos’ ability to obtain regulatory approvals to market its product candidates; market acceptance of Allakos’ product candidates; uncertainties related to the projections of the size of patient populations suffering from the diseases Allakos is targeting; Allakos’ ability to advance additional product candidates beyond AK006; uncertainties related to Allakos’ ability to realize the contemplated benefits of its restructuring and related reduction in force; Allakos’ ability to accurately forecast financial results; Allakos’ ability to obtain additional capital to finance its operations, research and drug development; Allakos’ ability to maintain the listing of our common stock on Nasdaq; general economic and market conditions, both domestic and international; domestic and international regulatory obligations; and other risks. Information regarding the foregoing and additional risks may be found in the section entitled “Risk Factors” in documents that Allakos files from time to time with the SEC. These documents contain and identify important factors that could cause the actual results for Allakos to differ materially from those contained in Allakos’ forward-looking statements. Any forward-looking statements contained in this press release speak only as of the date hereof, and Allakos specifically disclaims any obligation to update any forward-looking statement, except as required by law. These forward-looking statements should not be relied upon as representing Allakos’ views as of any date subsequent to the date of this press release. Source: Allakos Inc. Investor Contact:Adam Tomasi, PresidentAlex Schwartz, VP Strategic Finance and Investor Relationsir@allakos.com Media Contact:Denise Powelldenise@redhousecomms.com ALLAKOS INC. UNAUDITED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (in thousands, except per share data) Three Months Ended Six Months Ended June 30, June 30, 2024 2023 2024 2023 Operating expenses Research and development $19,422 $27,280 $54,246 $60,358 General and administrative 9,211 10,537 20,109 22,505 Impairment of long-lived assets — — 27,347 — Total operating expenses 28,633 37,817 101,702 82,863 Loss from operations (28,633) (37,817) (101,702) (82,863)Interest income 1,959 2,697 3,954 5,375 Other expense, net (2) — (74) (36)Net loss (26,676) (35,120) (97,822) (77,524)Unrealized gain (loss) on investments (11) (171) (41) 125 Comprehensive loss $(26,687) $(35,291) $(97,863) $(77,399)Net loss per common share: Basic and diluted $(0.30) $(0.41) $(1.11) $(0.90)Weighted-average number of common shares outstanding: Basic and diluted 88,644 86,646 88,342 86,246 ALLAKOS INC. UNAUDITED CONDENSED BALANCE SHEETS (in thousands) June 30, December 31, 2024 2023 Assets Current assets: Cash and cash equivalents $26,496 $66,440 Investments 96,625 104,354 Prepaid expenses and other current assets 4,805 9,095 Total current assets 127,926 179,889 Property and equipment, net 16,590 33,369 Operating lease right-of-use assets 10,228 24,136 Other long-term assets 1,714 6,216 Total assets $156,458 $243,610 Liabilities and stockholders’ equity Current liabilities: Accounts payable $16,119 $1,764 Accrued expenses and other current liabilities 19,761 34,814 Total current liabilities 35,880 36,578 Operating lease liabilities, net of current portion 36,579 38,215 Total liabilities 72,459 74,793 Stockholders’ equity: Common stock 89 88 Additional paid-in capital 1,300,200 1,287,156 Accumulated other comprehensive gain (loss) 9 50 Accumulated deficit (1,216,299) (1,118,477)Total stockholders’ equity 83,999 168,817 Total liabilities and stockholders’ equity $156,458 $243,610