Inhibrx Biosciences Reports Second Quarter 2024 Financial Results and Recent Corporate Highlights

On August 13, 2024 Inhibrx Biosciences, Inc. (Nasdaq: INBX) ("Inhibrx Biosciences" or the "Company"), a biopharmaceutical company with two programs in ongoing clinical trials and a strong emerging pipeline, reported financial results for the second quarter of 2024 and provided an update on recent corporate highlights (Press release, Inhibrx, AUG 13, 2024, https://www.prnewswire.com/news-releases/inhibrx-biosciences-reports-second-quarter-2024-financial-results-and-recent-corporate-highlights-302221636.html [SID1234645832]).

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Separation from the Former Parent

In January 2024, Inhibrx, Inc. (the "Former Parent") announced its intent, as approved by its board of directors, to effect the spin-off of INBRX-101, an optimized, recombinant alpha-1 antitrypsin ("AAT"), augmentation therapy currently in a registrational trial for the treatment of patients with alpha-1 antitrypsin deficiency.

On May 30, 2024, the Former Parent completed the transaction, pursuant to which (i) all assets and liabilities primarily related to INBRX-101 (the "101 Business"), were transferred to Aventis Inc. (the "Acquirer"), a wholly-owned subsidiary of Sanofi S.A. ("Sanofi"); and (ii) by way of a pre-closing reorganization (the "Separation"), the Company acquired the assets and liabilities and corporate infrastructure associated with its ongoing programs, INBRX-106 and ozekibart (INBRX-109), and its discovery pipeline, as well as the remaining close-out obligations related to its previously terminated program, INBRX-105.

Upon the closing, each Former Parent stockholder received: (i) $30.00 per share in cash, (ii) one contingent value right per share, representing the right to receive a contingent payment of $5.00 in cash upon the achievement of a regulatory milestone, and (iii) one SEC-registered, publicly listed, share of Inhibrx Biosciences for every four shares of the Former Parent’s common stock held. The Former Parent retained an equity interest in Inhibrx Biosciences of 8% upon the distribution of shares to the Former Parent stockholders (the "Distribution").

In connection with the Separation, the Acquirer paid transaction consideration totaling approximately $2.2 billion in aggregate value, including the $35.00 per share consideration and the assumption of the third-party debt obligations of the Former Parent. In addition, the Acquirer assumed all assets and liabilities under contracts primarily related to INBRX-101 upon close of the transaction. The Acquirer also reimbursed the Company or paid on behalf of the Company $68.0 million in transaction costs.

From and after the closing, Inhibrx Biosciences continues to operate as a stand-alone, publicly traded company focused on its two clinical programs, ozekibart (INBRX-109) and INBRX-106. Inhibrx Biosciences continues to trade as INBX on the Nasdaq Global Market. We do not expect the results of operations directly arising from and related to the Separation and Distribution to occur in future periods.
Financial Results

Cash and Cash Equivalents. As of June 30, 2024, Inhibrx Biosciences had cash and cash equivalents of $226.9 million, compared to $255.4 million as of May 30, 2024 following the Separation from the Former Parent. The Company’s cash outflows during this period relate primarily to the distribution of consideration totaling $17.7 million, which was paid out to the Former Parent’s optionholders and remitted by the Company within ten business days of the close of the transaction in accordance with the terms of the Separation and Distribution. Other cash outflows during the period relate to the Company’s ongoing operations.

R&D Expense. Research and development expenses were $67.6 million during the second quarter of 2024, compared to $34.1 million during the second quarter of 2023. The increase in research and development expenses was primarily due to the following factors:

stock option expense recognized upon the acceleration of outstanding stock options in connection with the Separation and Distribution;

an increase in CMC expenses due to the nature of the development and manufacturing activities performed at its CDMO and CRO partners supporting the Company’s clinical and preclinical therapeutic candidates, which reflect the stage-specific needs of its programs during each period, including early and late-stage drug substance clinical manufacturing, analytical development, quality control, testing and stability studies, drug product development, scale-up, robustness studies, and selected biologics license applications-enabling activities; and

offset in part by a decrease in clinical trial expenses following the termination of the Company’s INBRX-105 program and the removal of the INBRX-101 program following the Separation.

G&A Expense. General and administrative expenses were $93.4 million during the second quarter of 2024, compared to $7.3 million during the second quarter of 2023. The increase in general and administrative expenses was primarily due to the following factors:

an increase in legal, advisory, and consulting fees incurred in connection with the Separation and Distribution;

stock option expense recognized upon the acceleration of outstanding stock options in connection with the Separation and Distribution;

an increase in pre-commercialization expenses, which was primarily related to increases in consulting services to support the Company’s commercial operations business intelligence strategies and market research expenses related to ozekibart (INBRX-109) and INBRX-101 prior to the transaction;

an increase in professional service expenses related to legal services which support the Company in its general corporate and intellectual property matters, and legal proceedings.

Other Income (Expense). Other income was $2.0 billion during the second quarter of 2024, compared to other expense of $5.7 million during the second quarter of 2023. Other income during the second quarter of 2024 consists of gains recorded in connection with the completion of the Separation and Distribution, related to (i) the consideration paid by the Acquirer for all outstanding common stock, warrants, and stock options, (ii) the extinguishment of the Company’s outstanding debt which was assumed by the Acquirer, (iii) assets and liabilities related to the 101 Business, which were assumed by the Acquirer, and (iv) transaction costs paid for by the Acquirer.

Net Income (Loss). Net income was $1.9 billion during the second quarter of 2024, or earnings per share of $127.10, basic, and $125.48, diluted, compared to a net loss of $47.1 million during the second quarter of 2023, or $4.31 per share, basic and diluted.

Immutep Announces First Participant Dosed in Phase I Study of IMP761, a First in Class Agonist LAG-3 Antibody

On August 14, 2024 – Immutep Limited (ASX: IMM; NASDAQ: IMMP) ("Immutep" or "the Company"), a clinical-stage biotechnology company developing novel LAG-3 immunotherapies for cancer and autoimmune disease, reported that the first participant has been successfully dosed in the first-inhuman Phase I trial of IMP761 (Press release, Immutep, AUG 13, 2024, View Source [SID1234645831]). This first-in-class agonist LAG-3 antibody is designed to restore balance to the immune system by enhancing the "brake" function of LAG-3 to silence dysregulated self-antigen-specific memory T cells that cause many autoimmune diseases.

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The single and multiple ascending dose, placebo-controlled, double-blind Phase I study is being conducted by the Centre for Human Drug Research (CHDR), a world-class institute in Leiden, the Netherlands, specializing in cutting-edge early-stage clinical drug research. The study aims to enrol 49 healthy volunteers, to assess safety, pharmacokinetics (PK) and pharmacodynamics (PD).

CHDR will implement its unique keyhole limpet haemocyanin (KLH) challenge model allowing for the evaluation of IMP761’s pharmacodynamic activity at the earliest stages of clinical development. Immutep anticipates the first safety data from the Phase I study to be available before end of the year with assessment of PK/PD relationships to follow in the first half of CY2025.

The immune checkpoint LAG-3 has been identified as a promising target for agonist LAG-3 immunotherapy to treat rheumatoid arthritis, Type 1 diabetes, and multiple sclerosis, among other autoimmune diseases.1,2,3 In preclinical studies, IMP761 has led to a large decrease in inflammatory cytokines and demonstrated its effectiveness in suppressing antigen-specific T cell–mediated immune responses.

About IMP761

IMP761, a first-in-class immunosuppressive LAG-3 agonist antibody, has the potential to address the root cause of many autoimmune diseases by specifically silencing autoimmune memory T cells that accumulate at disease sites and restoring balance to the immune system. As published in the Journal of Immunology, encouraging pre-clinical in vivo and in vitro studies show IMP761 inhibits peptide-induced T cell proliferation, activation of human primary T cells, and an antigen-specific delayed-type hypersensitivity (DTH) reaction. Additional preclinical data in oligoarticular juvenile idiopathic arthritis (o-JIA) published in Pediatric Research details how IMP761 led to a decrease in a broad spectrum of effector cytokines in just 48 hours. This study also showed children with o-JIA have a skewed LAG-3 metabolism and suggested they can benefit from agonistic LAG-3 activity.

Theriva™ Biologics Reports Second Quarter 2024 Operational Highlights and Financial Results

On August 13, 2024 Theriva Biologics (NYSE American: TOVX), a diversified clinical-stage company developing therapeutics designed to treat cancer and related diseases in areas of high unmet need, reported financial results for the second quarter ended June 30, 2024, and provided a corporate update (Press release, Theriva Biologics, AUG 13, 2024, View Source [SID1234645830]).

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"We remain on track to complete enrollment for VIRAGE, our Phase 2b trial in metastatic PDAC during the third quarter and are pleased with the FDA’s decision to grant FTD to VCN-01, highlighting the urgent need for new options to treat this deadly disease," said Steven A. Shallcross, Chief Executive Officer of Theriva Biologics. "Our lead oncolytic virus (OV) product candidate, VCN-01 is uniquely designed for co-administration with chemotherapy and/or immunotherapy to enhance tumor access by these agents and elicit a persistent antitumor immune response. The ongoing VIRAGE trial is evaluating VCN-01 in combination with standard-of-care chemotherapy, gemcitabine/nab-paclitaxel, as a first line therapy to enable the earliest possible use in metastatic PDAC. We look forward to building upon the compelling clinical data from Phase 1 studies that underscores VCN-01’s multiple modes of action and potential to overcome historical challenges around systemic OV administration. Beyond PDAC, we continue to pursue opportunities that maximize the therapeutic potential of VCN-01. To that end, we are excited by the grant of RPDD to VCN-01 for the treatment of children with retinoblastoma. We will continue to build a portfolio of potentially improved therapeutic combinations as part of our broader strategy to address unmet needs for difficult to treat cancers. Additionally, we have taken steps to further rationalized our burn, which will allow us to extend our cash runway by an additional quarter and bring us closer to the completion and data readout of the VIRAGE trial."

Recent Program Highlights and Anticipated Milestones:

VCN-01:

Pancreatic Ductal Adenocarcinoma (PDAC):
Dosing is underway and enrollment is nearing completion for VIRAGE, the randomized, controlled, multicenter, open-label Phase 2b trial of VCN-01 in combination with standard-of-care chemotherapy (gemcitabine/nab-paclitaxel) as a first line therapy in newly diagnosed metastatic PDAC patients. The trial intends to enroll 92 evaluable patients across sites in the U.S. and Spain, and is expected to complete enrollment in the third quarter of 2024.
The U.S. FDA granted FTD to lead clinical candidate VCN-01 in combination with gemcitabine and nab-paclitaxel to improve progression-free survival and overall survival in patients with metastatic pancreatic adenocarcinoma. Overall survival and progression free survival are the primary and key secondary endpoints respectively in the ongoing VIRAGE study. Both the FDA and EMA previously granted orphan drug designation to VCN-01 for treatment of PDAC.
Retinoblastoma:
Results from the investigator sponsored Phase 1 trial evaluating the safety and activity of intravitreal VCN-01 in pediatric patients with refractory retinoblastoma were determined to be positive by the study Monitoring Committee. Discussions with key opinion leaders worldwide, as well as with regulatory agencies, are ongoing to refine our retinoblastoma clinical strategy.
The U.S. FDA granted RPDD to lead clinical candidate VCN-01 to treat pediatric patients with retinoblastoma. The FDA has previously granted orphan drug designation to VCN-01 in this indication.
If a Biologics License Application for VCN-01 for the treatment of retinoblastoma is ultimately approved by the FDA, Theriva may be eligible to receive a Priority Review Voucher that can be redeemed to receive a priority review for any subsequent marketing application, or may be sold or transferred.
SYN-004 (ribaxamase):

Dosing and safety follow-up were completed for the second cohort of the Phase 1b/2a randomized, double-blinded, placebo-controlled clinical trial of SYN-004 (ribaxamase) in allogeneic hematopoietic cell transplant (HCT) recipients for the prevention of acute graft-versus-host-disease (aGVHD).
If the Data Safety and Monitoring Committee recommends continuation of the trial, enrollment into the third cohort could commence in the second half of 2024 contingent on adequate funding.
Second Quarter Ended June 30, 2024 Financial Results

General and administrative expenses decreased to $1.5 million for the three months ended June 30, 2024, from $2.7 million for the three months ended June 30, 2023. This decrease of 45% is primarily comprised of the decrease in employee compensation costs, consulting fees, audit fees, lower director and officer insurance, and a decrease in fair value of the contingent consideration adjustment, offset by increased investor relation costs. The charge related to stock-based compensation expense was $114,000 for the three months ended June 30, 2024, compared to $106,000 for the three months ended June 30, 2023.

Research and development expenses decreased to $3.0 million for the three months ended June 30, 2024, from approximately $3.1 million for the three months ended June 30, 2023. This decrease of 6% is primarily the result of lower clinical trial expenses related to our VIRAGE Phase 2 clinical trial of VCN-01 in PDAC and lower expenses related to our Phase 1a clinical trial of SYN-020 which has completed, offset by increased expenses to our Phase 1b/2a clinical trial of SYN-004 (ribaxamase) in allogeneic HCT recipients. We anticipate research and development expense to increase as we continue enrollment in our VIRAGE Phase 2 clinical trial of VCN-01 in PDAC, advance our VCN-01 program in retinoblastoma, expand GMP manufacturing activities for VCN-01, and continue supporting our other preclinical and discovery initiatives. The charge related to stock-based compensation expense was $58,000 for the three months ended June 30, 2024, compared to $40,000 related to stock-based compensation expense for the three months ended June 30, 2023.

During the quarter ended June 30, 2024, we experienced a sustained decline in the quoted market price of our common stock and we deemed this to be a triggering event for impairment. The Company performed an interim impairment analysis using the "Income approach" that requires significant judgments, including primarily the estimation of future development costs, the probability of success in various phases of its development programs, potential post-launch cash flows and a risk-adjusted weighted average cost of capital. We concluded that the IPR&D was not impaired as of June 30, 2024, however, goodwill with a carrying value of $5.5 million was written down to its estimated fair value of $1.5 million and an impairment charge of $4.0 million was recorded during the quarter ended June 30, 2024. The decrease in the valuation was primarily driven by an increase in the discount rate which was impacted by an increase in the company specific risk premium, and not by material changes to the clinical and administrative operations of the business.

Other income was $172,000 for the three months ended June 30, 2024 compared to other income of $377,000 for the three months ended June 30, 2023. Other income for the three months ended June 30, 2024 is primarily comprised of interest income of $173,000 and an exchange loss of $1,000. Other income for the three months ended June 30, 2023 is primarily comprised of interest income of $381,000 and exchange loss of $4,000.

Cash and cash equivalents totaled $16.6 million as of June 30, 2024, compared to $23.2 million as of December 31, 2023.

Phase 1b/2 "RAINIER" Frontline Acute Myeloid Leukemia (AML) Trial Initiated

On August 13, 2024 Aptevo Therapeutics ("Aptevo") (NASDAQ:APVO), a clinical-stage biotechnology company focused on developing novel immune-oncology therapeutics based on its proprietary ADAPTIR and ADAPTIR-FLEX platform technologies, reported initiation of the Company’s Phase 1b/2 dose optimization trial, "RAINIER," as part of its ongoing program to evaluate APVO436 in combination with venetoclax + azacitidine for frontline patients with acute myeloid leukemia (AML) (Press release, Aptevo Therapeutics, AUG 13, 2024, View Source [SID1234645829]). RAINIER will be conducted in two parts. First, a Phase 1b frontline AML study followed by a Phase 2 study. The Company also announced that APVO436 has received its generic name, mipletamig (mih-ple’-tah-mig) and will refer to its lead candidate by this name moving forward.

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"With a strong foundation of positive clinical data demonstrating safety, tolerability, efficacy, and durability, we are thrilled to announce the initiation of our Phase 1b/2 RAINIER study. This trial aims to identify the recommended Phase 2 dose and further evaluate key indicators-such as safety, tolerability, and efficacy-of mipletamig when combined with standard of care venetoclax and azacitidine in frontline AML patients," stated Marvin White, President and CEO of Aptevo. "Mipletamig has already been administered to 90 patients across two trials, both as a monotherapy and in combination therapy, with results showing an exceptional safety profile and efficacy outcomes more than double those reported in the literature and a 75% complete response rate among frontline patients. We believe the RAINIER trial will not only confirm these earlier outcomes but also establish the recommended Phase 2 dose and further demonstrate mipletamig’s potential to transform AML treatment when used alongside the existing standard of care."

This frontline AML study is a multi-center, multi-cohort, open label dose finding study of up to 39 patients across five dose levels ranging from 9 mcg – 140 mcg in combination with venetoclax and azacitidine (ven/aza). Subjects will be adults aged 18 or older, newly diagnosed with AML who are not eligible for intensive induction chemotherapy. Phase 1b consists of 28-day cycles of treatment in five sequential cohorts. Aptevo has partnered with Prometrika (View Source), a premier contract research organization, for the RAINIER trial.

Primary endpoints:

Evaluate the safety, tolerability, and maximum tolerated dose (MTD) of increasing doses of APVO436 in combination with venetoclax and azacitidine in patients with newly diagnosed AML

Determine the recommended Phase 2 dose

Assess incidence of cytokine release syndrome (CRS) at each dose level

*Benchmark Composite References: Aldoss 2019, Maiti 2021, Morsia 2020, Garciaz 2022, Feld 2021

Secondary Endpoint:

Determine the efficacy of increasing doses of APVO436 in combination with venetoclax and azacitidine in patients with newly diagnosed AML

"The initiation of our RAINIER trial marks a critical milestone in the clinical development of our lead candidate, mipletamig, in combination therapy for frontline AML," said Dirk Huebner, MD, Chief Medical Officer at Aptevo. "In this dose optimization trial, we will administer a combination of venetoclax, azacitidine, and mipletamig across up to five different dose levels. Our primary objective is to identify the optimal Phase 2 dose while continuing to assess the safety, tolerability, efficacy, and durability of remission. By focusing on frontline patients with this combination therapy, we aim to gain deeper insights into the role of mipletamig within the triplet regimen and its potential to improve treatment outcomes."

Prior Outcomes: Compelling Results to Date

Dose Escalation (monotherapy)

2 complete remissions (CRs) reported in AML patients who received the drug as a monotherapy

Most CRS cases were low-grade and clinically manageable

Dose Expansion (combination therapy)

91% clinical benefit rate in combination with standard of care venetoclax + azacitidine in venetoclax naïve patients which exceeds our benchmark (Benchmark Composite References: Aldoss 2019, Maiti 2021, Morsia 2020, Garciaz 2022, Feld 2021)

75% of frontline patients experienced a CR

Clinically meaningful duration of remission, with no median reached – multiple patients either stayed on treatment or moved to transplant

Only 27% of patients experienced CRS (cytokine release syndrome), which is favorable compared to competitor drugs.

Most CRS cases were low-grade and clinically manageable

About Mipletamig

Aptevo’s wholly owned lead proprietary drug candidate, mipletamig, targeting AML, MDS and other leukemias, is differentiated by design to redirect the immune system of the patient to destroy leukemic cells and leukemic stem cells expressing the target antigen CD123, which is a compelling target for AML due to its overexpression on leukemic stem cells and AML blasts. This antibody-like recombinant protein therapeutic is designed to engage both leukemic cells and T cells of the immune system and bring them closely together to trigger the destruction of leukemic cells. Mipletamig is purposefully designed to reduce the likelihood and severity of CRS by use of a unique CD3 derived from CRIS-7 vs. the CD3 used by other competitors. Mipletamig has received orphan drug designation ("orphan status") for AML according to the Orphan Drug Act. Mipletamig has been evaluated in 90 patients over two trials to date. RAINIER, Aptevo’s Phase 1b/2 frontline AML program, was initiated in 3Q24.

aTyr Pharma Announces Second Quarter 2024 Results and Provides Corporate Update

On August 13, 2024 aTyr Pharma, Inc. (Nasdaq: ATYR) ("aTyr" or the "Company"), a clinical stage biotechnology company engaged in the discovery and development of first-in-class medicines from its proprietary tRNA synthetase platform, reported second quarter 2024 results and provided a corporate update (Press release, aTyr Pharma, AUG 13, 2024, View Source [SID1234645828]).

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"The second quarter of 2024 was a milestone quarter for aTyr, as we completed enrollment in our global pivotal Phase 3 EFZO-FIT study of efzofitimod in patients with pulmonary sarcoidosis, a major form of interstitial lung disease (ILD)," said Sanjay S. Shukla, M.D., M.S., President and Chief Executive Officer of aTyr. "This landmark study is the largest interventional study ever to be conducted in sarcoidosis and presents an opportunity to deliver a potentially transformative therapy to sarcoidosis patients who have been waiting more than 60 years for a new drug to be approved for this disease. We look forward to releasing topline data from this study in the third quarter of 2025."

Second Quarter 2024 and Subsequent Period Highlights

Completed enrollment in the global pivotal Phase 3 EFZO-FIT study to evaluate the efficacy and safety of efzofitimod in patients with pulmonary sarcoidosis. This is a randomized, double-blind, placebo-controlled, 52-week study consisting of three parallel cohorts randomized equally to either 3.0 mg/kg or 5.0 mg/kg of efzofitimod or placebo dosed intravenously monthly for a total of 12 doses. The study enrolled 268 patients with pulmonary sarcoidosis at 85 centers in 9 countries, exceeding the targeted enrollment. Topline data from the study are expected in the third quarter of 2025. Patients who complete the study and wish to receive treatment with efzofitimod outside of the clinical trial are eligible to participate in an Individual Patient Expanded Access Program (EAP).
Continued enrollment in the Phase 2 EFZO-CONNECT study to evaluate the efficacy, safety and tolerability of efzofitimod in patients with systemic sclerosis (SSc, or scleroderma)-related ILD (SSc-ILD). This proof-of-concept study is a randomized, double-blind, placebo-controlled, 28-week study consisting of three parallel cohorts randomized 2:2:1 to either 270 mg or 450 mg of efzofitimod or placebo dosed intravenously monthly for a total of 6 doses. The study intends to enroll up to 25 patients with SSc-ILD and is open for enrollment at multiple centers in the U.S. Patients who complete the study and wish to receive ongoing treatment with efzofitimod are eligible to participate in a 24-week open-label extension (OLE), which was recently incorporated into the study protocol. Based on current enrollment projections, the Company expects to report interim data from the study in the second quarter of 2025.
Presented a poster describing efzofitimod’s mechanism of action at the American Thoracic Society (ATS) 2024 International Conference. The findings further demonstrated that neuropilin-2 (NRP2), efzofitimod’s binding partner, is an important new immune target in ILD and that efzofitimod modulates myeloid cells to confer its anti-inflammatory benefit.
Entered into a research agreement with Stanford Medicine to explore the role of the Company’s anti-NRP2 antibodies in glioblastoma multiforme (GBM). Michael Lim, M.D., Chair of the Department of Neurosurgery at Stanford Medicine, will serve as the principal investigator for the study, which aims to explore the role anti-NRP2 antibodies in combination with chemotherapy to evaluate their role in reversing immune evasion in GBM, the most common type of primary brain cancer.
Appointed Jayant Aphale, Ph.D., as Vice President, Technical Operations. Dr. Aphale has more than 30 years of experience working in technical operations and manufacturing for novel therapeutic and vaccine products at biotechnology and pharmaceutical companies. Dr. Aphale will serve as a member of the Company’s executive leadership team, overseeing manufacturing activities at contract development and manufacturing organizations and implementing strategies related to the continuous improvement of commercial manufacturing, supply chain management, process development of new products and product life cycle management.
Second Quarter 2024 Financial Highlights and Cash Position

Cash & Investment Position: Cash, cash equivalents, restricted cash and investments as of June 30, 2024, were $81.4 million.
R&D Expenses: Research and development expenses were $14.0 million for the second quarter 2024, which consisted primarily of clinical trial costs for the Phase 3 EFZO-FIT and Phase 2 EFZO-CONNECT studies, manufacturing costs for the efzofitimod program and research and development costs for the efzofitimod and discovery programs.
G&A Expenses: General and administrative expenses were $3.3 million for the second quarter 2024.
About Efzofitimod

Efzofitimod is a first-in-class biologic immunomodulator in clinical development for the treatment of interstitial lung disease (ILD), a group of immune-mediated disorders that can cause inflammation and fibrosis, or scarring, of the lungs. Efzofitimod is a tRNA synthetase derived therapy that selectively modulates activated myeloid cells through neuropilin-2 to resolve inflammation without immune suppression and potentially prevent the progression of fibrosis. aTyr is currently investigating efzofitimod in the global Phase 3 EFZO-FIT study in patients with pulmonary sarcoidosis, a major form of ILD, and in the Phase 2 EFZO-CONNECT study in patients with systemic sclerosis (SSc, or scleroderma)-related ILD. These forms of ILD have limited therapeutic options and there is a need for safer and more effective, disease-modifying treatments that improve outcomes.