ALX Oncology and Quantum Leap Healthcare CollaborativeTM Announce First Patient Dosed in the I-SPY-P1 TRIAL in Breast Cancer

ALX Oncology Holdings Inc., ("ALX Oncology") (Nasdaq: ALXO), a clinical-stage immuno-oncology company developing therapies that block the CD47 checkpoint pathway, and Quantum Leap Healthcare Collaborative ("Quantum Leap") today announced that the first patient has been dosed in the I-SPY-P1-TRIAL for the treatment of patients with unresectable or metastatic HER2-positive and HER2-low breast cancer.

SOUTH SAN FRANCISCO, Calif., March 14, 2023 /PRNewswire/ — ALX Oncology Holdings Inc., (“ALX Oncology”) (Nasdaq: ALXO), a clinical-stage immuno-oncology company developing therapies that block the CD47 checkpoint pathway, and Quantum Leap Healthcare Collaborative (“Quantum Leap”) today announced that the first patient has been dosed in the I-SPY-P1-TRIAL for the treatment of patients with unresectable or metastatic HER2-positive and HER2-low breast cancer. Sponsored by Quantum Leap, this Phase 1 (open-label), multi-center study arm will investigate evorpacept, a CD47 blocker, in combination with ENHERTU® (fam-trastuzumab deruxtecan-nxki), a HER2 directed antibody-drug conjugate (“ADC”), to determine the safety, tolerability and efficacy of this drug combination.

“Evorpacept is a potentially transformative approach to strengthen the anticancer immune response against breast cancer with minimal added toxicity,” said Laura Esserman, M.D., co-founder of Quantum Leap, Professor of Surgery and Radiology at the University of California San Francisco, CA. “The combination of a novel CD47 blocker with a HER2-directed ADC represents a promising strategy for patients with advanced breast cancer who develop resistance to other therapies and are in urgent need of new treatment options. The I-SPY Phase 1 program is designed to rapidly assess safety of novel therapy combinations that will help advanced cancer patients, but also rapidly qualify them to be tested in the high-risk early stage setting in the I-SPY 2.2 TRIAL, where complete responses result in curing patients. We are excited to collaborate with ALX Oncology to accelerate the development of this therapeutic combination with the goal of improving patients’ lives, with more effective and less toxic therapies.”

About the I-SPY TRIALs

The I-SPY TRIAL (“Investigation of Serial studies to Predict Your Therapeutic Response with Imaging And moLecular analysis”) was designed to rapidly screen promising experimental treatments and identify those most effective in specific patient subgroups based on molecular characteristics (biomarker signatures). The trial is a unique collaborative effort by a consortium that includes the Food and Drug Administration (“FDA”), industry, patient advocates, philanthropic sponsors, and clinicians from 16 major U.S. cancer research centers. Under the terms of the collaboration agreement, Quantum Leap Healthcare Collaborative is the trial sponsor and manages all study operations. The trial now includes the serial testing of agents and combinations with the ability to escalate and de-escalate therapy based on response to treatment, and the ability to start with non-chemotherapy combinations. For more information, visit www.ispytrials.org.

The I-SPY Phase 1 trial is the newest member of the I-SPY master protocols. It is designed to rapidly test the safety and identify the optimal dose of promising combinations of novel therapeutics that might be particularly effective in the early-stage high-risk breast cancer, but where additional safety or dose finding is necessary. The phase 1 trial was designed to accelerate the pace of advancing safe, effective, and less toxic therapies to the early-stage treatments where lives can be saved. The I-SPY 2.2 TRIAL is uniquely poised to test therapies for their ability to result in a complete response where standard chemotherapy can be avoided.

About Quantum Leap Healthcare Collaborative

Quantum Leap Healthcare Collaborative is a 501c(3) charitable organization established in 2005 as a collaboration between medical researchers at University of California, San Francisco and Silicon Valley entrepreneurs. Our mission is to integrate care and research, and to foster high-impact trials with embedded clinical processes and systems technology and improved data management, greater access to clinical trial matching, and greater benefit to patients, providers, and researchers. Our goal is to improve and save lives. Quantum Leap provides operational, financial, and regulatory oversight to I-SPY. For more information, visit https://www.quantumleaphealth.org/.

About ALX Oncology

ALX Oncology is a publicly traded, clinical-stage immuno-oncology company focused on helping patients fight cancer by developing therapies that block the CD47 checkpoint pathway and bridge the innate and adaptive immune system. ALX Oncology’s lead product candidate, evorpacept, is a next generation CD47 blocking therapeutic that combines a high-affinity CD47 binding domain with an inactivated, proprietary Fc domain. Evorpacept has demonstrated promising clinical responses across a range of hematologic and solid malignancies in combination with a number of leading anti-cancer agents. ALX Oncology intends to continue clinical development of evorpacept for the treatment of multiple solid tumor indications and hematologic malignancies.

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements that involve substantial risks and uncertainties. Forward-looking statements include statements regarding future results of operations and financial position, business strategy, product candidates, planned preclinical studies and clinical trials, results of clinical trials, research and development costs, regulatory approvals, timing and likelihood of success, plans and objects of management for future operations, as well as statements regarding industry trends. Such forward-looking statements are based on ALX Oncology’s beliefs and assumptions and on information currently available to it on the date of this press release. Forward-looking statements may involve known and unknown risks, uncertainties and other factors that may cause ALX Oncology’s actual results, performance or achievements to be materially different from those expressed or implied by the forward-looking statements. These and other risks are described more fully in ALX Oncology’s filings with the Securities and Exchange Commission (“SEC”), including ALX Oncology’s Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and other documents ALX Oncology files with the SEC from time to time. Except to the extent required by law, ALX Oncology undertakes no obligation to update such statements to reflect events that occur or circumstances that exist after the date on which they were made.

ALX Oncology Investor Contact:
Peter Garcia
Chief Financial Officer, ALX Oncology
(650) 466-7125 Ext. 113
peter@alxoncology.com

Argot Partners
(212)-600-1902
alx@argotpartners.com

ALX Oncology Media Contact:
Karen Sharma
MacDougall
(781) 235-3060
alx@macdougall.bio

Quantum Leap Healthcare Collaborative Media Contact:
Jacqueline Murray
Director, Marketing and Communications
(415) 839-8082
j.murray@quantumleaphealth.org

SOURCE Quantum Leap Healthcare Collaborative

For more information, email karyn.digiorgio@quantumleaphealth.org

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Tracey Heather

Advocate Liaison

As Patient Engagement Lead at Quantum Leap, I manage follow-up data projects for the I-SPY 2 Trial, develop strategies to strengthen patient engagement, and oversee the I-SPY Advocate group. After six successful years raising funds to support Quantum’s mission, I embraced this new role last summer, drawn by the opportunity to make a direct impact on the patients we serve. Each day brings new challenges and insights, and I especially enjoy supporting and collaborating with our inspiring I-SPY Advocates.

Outside of work, I am pursuing a Master of Public Administration with a focus on nonprofit management at SF State. I’m passionate about trail running, skiing, live music, camping, traveling, and collegiate gymnastics—my daughter competes at Oregon State. For the past 5 years, I have volunteered with SF CASA as a mentor to an incredible 18-year-old foster youth whose resilience continually reminds me of life’s true priorities.

Carolyn Clark Beedle

Carolyn Clark Beedle, a 2023 breast cancer survivor, joined the advocate program after successful completion of treatment with the UCSF Breast Oncology Program. Her experience working with a patient advocate during her TNBC treatment led to an understanding that empowering women to advocate for their own health and healthcare will contribute to improved health outcomes and broader access to care. Carolyn began advocating for cancer patients and their families during her treatment, now is a member of the Breast Science Advocacy Core (BSAC) with the UCSF Breast Oncology Program, and currently shares information and research with CFNP associates at La Clinica in the Bay Area to inform and empower their patient population.

Carolyn is continuing her on the ground training as an advocate reviewer with both Quantum Health and BSAC and is enrolled in the Patient Advocacy Training in Health Science course with Stanford Medicine. Her 30+ career in corporate marketing/communications, program development and non-profit leadership augmented by her breast cancer treatment experience serves Carolyn well in representing and communicating the patient voice and perspective.

She received her BA (History/English Lit) and MA (Public History/Research and Record Management) from the University of San Diego, is a proud fifth generation San Franciscan, and active board member with numerous non-profits that support social work and the arts.

Silver Alkhafaji

Silver Alkhafaji is a PhD candidate in the Pharmaceutical Sciences and Pharmacogenomics (PSPG) program at UCSF. She received her Bachelor of Science in Chemical Biology from UC Berkeley. Prior to UCSF, she worked in the Clinical Pharmacology Department at Genentech. Silver’s current research focuses on non-invasive liquid biopsies to predict response and side effects of immunotherapies and endocrine therapies in early-stage breast cancer participants in I-SPY 2.

Silver is interested in clinical outcomes research to advance precision medicine and improve cancer patients’ quality of life. She is passionate about health equity, inclusive research, patient advocacy, and women’s health.
Silver volunteers at the Patient and Family Cancer Support Center at UCSF where she assists in patient navigation and connecting patients and their families with resources that improve their healthcare experience while receiving cancer treatments and/or during survivorship. 

Through her DEI work in her PhD program, Silver raises awareness around issues related to social justice and community building through organizing community-centered events. Additionally, she is a member of the Life Sciences Career Advisory Council at Thrive Scholars, where she enjoys supporting college students of color from economically disadvantaged communities in providing the opportunities they need to thrive at top colleges and in high-trajectory careers. 

Silver is a member of the American Association of University Women (AAUW) Alameda Branch where she focuses her efforts on increasing membership of community college women coming from exceptional backgrounds: student parents, low-income, and first-generation college students.

In her free time, she writes poetry and prose on emotional healing, radical acceptance, and patience. Writing has helped her process difficult situations and connect with people on a deeper level.

Jane Mortimer

Jane is a breast cancer survivor and advocate dedicated to positively impacting the lives of women affected by the disease. Diagnosed with triple negative breast cancer in 2012, she participated in the I-SPY 2 trial at UCSF and has been cancer free for more than ten years.

Her advocacy journey began in 2003 at UCSF as a volunteer with the Patient and Family Cancer Support Center and Decision Support Services and she previously managed the Peer Support program at UCSF. Drawing on her experience in marketing and media strategy, she uses her skills to make a meaningful impact by supporting advocacy and research that improves outcomes for women living with breast cancer.

Jan Tomlinson

In March of 2023 , Jan was diagnosed with a large aggressive triple negative breast cancer and informed that her cancer was the” bad girl” of cancer and offered standard chemotherapy for 24 weeks. Devasted by the diagnosis Jan felt like she had a dire prognosis. After seeking several opinions, she opted to join a Clinical Trial program for her treatment. The trial consisted of significantly less chemotherapy, and monitored closely over a 12-week period, The data predicted a complete pathological response , and she then went immediately to surgery. Pathology reports supported that she had a successful outcome reaching PCR meaning the tumor was gone, and no residual cancer was found in the surrounding tissue or lymph nodes. Jan was thrilled when her surgeon advised her of the results. The experience made Jan want to give back and share information that she received when she was at a critical juncture in her diagnosis. She is so passionate about making sure that everyone knows that the standard of care is one treatment option.

As she says, “ clinical trials have to be on the table” Because she achieved PCR, she expects a great outcome. She wants to share her story and encourage other women to strongly consider and participate in clinical trials. Jan is a UCSF Patient Advocate, involved in several programs they lead. Jan also is a BLACC Cab Member. Jan recently was in Washington DC to participate on a panel on Clinical Trials for ISPY at the National Press Club. UCSF will be hosting the RISE Up For Breast Cancer event where Jan will share her experience with clinical trials.

Deborah Collyar

Deb is a connector who founded Patient Advocates in Research (PAIR) “where research meets reality,” bringing ideas and people together for medical advances that offer real results for diverse patients and families.

Her vast experience between the worlds of tech, communication, strategy, management, policy, and equity bridges gaps between patients, scientists, medical providers, payers, governments, and non-profits.

Deb infuses patient engagement into projects, gathers relevant patient input, and encompasses many diseases, programs and policies at grassroots, national and international levels through companies, academia, and governments.

Key patient insights are delivered throughout discovery, development, clinical trials, results reporting, data-sharing, standards, genomics, and into practice.

Her experience spans translational and clinical research, epidemiology, health outcomes, and health delivery research with academia, federal agencies, companies, and patient communities.