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Summit Therapeutics Reports Financial Results and Operational Progress for the Fourth Quarter and Year Ended December 31, 2020

Summit Therapeutics Inc.
(‘Summit’ or the ‘Company’)

Cambridge, MA, March 17, 2021 - Summit Therapeutics Inc. (NASDAQ: SMMT) today reports its financial results and provides an update on its operational progress for the fourth quarter and full-year ended December 31, 2020.

Note:  A glossary of terms has been added to the end of this document in order to allow for the ease of understanding of terms or concepts in advance of reviewing this release. 

Ridinilazole for C. difficile Infection (‘CDI’)

  1. As of March 12, 2021, Summit had enrolled a total of 581 patients into its two ridinilazole Phase 3 Ri-CoDIFy clinical trials; together, both trials have a projected enrollment goal of 1,360 patients. Below is a table outlining the enrollment statistics by calendar quarter since the opening of the trials in February 2019.
QuarterNumber of Patients EnrolledCumulative Patients Enrolled
Q1 201999
Q2 20192130
Q3 20194373
Q4 201978151
Q1 2020101252
Q2 202073325
Q3 202064389
Q4 2020105494
Q1 2021*87*581*

*Q1 2021 includes quarter-to-date enrollment through March 12, 2021

  1. As previously disclosed, Summit is not providing public commentary on the timing of completion of the Phase 3 Ri-CoDIFy clinical trials. The Company plans to publicly update stakeholders quarterly as to enrollment status.
  2. The Ri-CoDIFy clinical trials aim to support application for marketing approval of the precision antibiotic ridinilazole in the United States and other territories, with the goal of use as first-line therapy to treat initial infection and reduce recurrence of CDI.
  3. BARDA is supporting the Phase 3 clinical trials and regulatory development of ridinilazole with a financial award of potential funding of up to $72.5 million. As of December 31, 2020, an aggregate of $53.3 million had been received.
  4. As presented within the American Journal of Physiology - Gastrointestinal and Liver Physiology (August 2020), dysbiosis of the gut microbiota with altered bile acid composition within the microbiome is believed to play a critical role in C. difficile infection, including recurrence of disease.  Ridinilazole is believed to spare the microbiome of further harm while killing C. difficile.

Discuva Platform

Enterobacteriaceae

The DDS-04 compound series is a new class of precision antibiotics with a new mechanism of action that acts via the novel bacterial target, LolCDE.  Our lead compound is in late lead optimization with the potential to treat multidrug resistant infections caused by a large group of pathogenic gram-negative bacteria, the Enterobacteriaceae.  Because LolCDE has never been a target of existing antibiotics and antimicrobials, bacterial resistance is not believed to exist to this approach, potentially allowing for the treatment of Enterobacteriaceae-caused infections that do not have effective current treatments due to high levels of resistance to existing classes of antibiotics.

Corporate Highlights

  1. Dr. Mahkam “Maky” Zanganeh was appointed to the Company’s Board of Directors and subsequently named the Company’s Chief Operating Officer in November 2020. She joined Summit from Maky Zanganeh and Associates (“MZA”), a consulting firm in the biotech space, where she is currently President and CEO.  Prior to MZA, Dr. Zanganeh was the Chief Operating Officer at Pharmacyclics, Inc., overseeing all clinical, research, commercial, and business-related matters, including playing a critical role in Pharmacyclics’ sale to AbbVie, Inc., in 2015.  Dr. Zanganeh also serves as a board member for Pulse BioSciences, Inc., and RenovoRx, Inc.  Dr. Zanganeh received her DDS from the Louis Pasteur University (France) and her MBA from Schiller International University (France).
  2. During the fourth quarter of 2020 and into the first quarter of 2021, the Company appointed several individuals to positions of senior leadership, bolstering a strong existing core leadership team and positioning the Company well for the completion of the Ri-CoDIFy clinical trials, the potential commercialization of ridinilazole, and the further development of the Company’s pipeline over the coming years.  These positions are Heads of departments including, but not limited to, Medical Science, Regulatory, Clinical Operations, and Patient Safety & Pharmacovigilance.

Financial Highlights

  1. Cash and cash equivalents on December 31, 2020, of $66.4 million compared to $63.8 million on December 31, 2019.
  2. In November 2020, the Company closed a private placement for a fundraising of $50 million through the issuance and sale of shares of common stock to the Company’s Executive Chairman and Chief Executive Officer, Robert W. Duggan, Polar Capital, and the Company’s Director and Chief Operating Officer, Dr. Mahkam Zanganeh. 
  3. The Company's existing cash and cash equivalents and committed external funding are expected to be sufficient to enable the Company to fund its operating expenses and capital expenditure requirements into the fourth quarter of 2021.  The Company's principal shareholder, Robert W. Duggan, has given his intention to the Board of Directors to participate in future fundraising, as required, to support the Company with its operating expenses and capital expenditure requirements.
  4. Net loss for the year ended December 31, 2020, of $52.7 million compared to a net loss of $29.1 million for the eleven months ended December 31, 2019.


About C. difficile Infection

Clostridioides difficile, or C. difficile, infection (CDI) is a bacterial infection of the colon that produces toxins causing inflammation of the colon and severe watery diarrhea, painful abdominal cramping, nausea, fever, and dehydration. CDI can also result in more serious disease complications, including bowel perforation, sepsis, and death.  CDI is a contagious infectious disease that represents a serious healthcare issue in hospitals, long-term care homes, and the wider community.  Summit estimates that there are approximately 500,000 cases of CDI each year across the United States based on a meta-analysis published in the Journal of Global Health, June 2019.

About Enterobacteriaceae

Enterobacteriaceae are a family of bacteria responsible for serious infections across a number of conditions including bloodstream infections, urinary tract infections, and hospital-acquired pneumonias.  Multidrug resistant Enterobacteriaceae are resistant to treatment by most or occasionally all existent antibiotics.  The most difficult to treat among them are the Carbapenem-resistant Enterobacteriaceae, which are classified as Urgent Threats by the CDC.

About Summit Therapeutics

Summit Therapeutics, empowered by its Discuva Platform, the Company’s innovative antibiotic discovery engine, supported by BARDA and CARB-X funding, intends to be the leader in patient-friendly and paradigm-shifting antibiotic innovation while being an ally to physicians.  Our new mechanism antibiotics are designed to become the patient-friendly, new-era standard of care, by working in harmony with the human microbiome to treat prospective patients suffering from infectious disease, initially focusing on Clostridioides difficile infections (CDI).  The overriding objective of Summit Therapeutics is to create value for patients, hospital infectious disease caregivers, and community-based infectious disease healthcare providers, as well as healthcare payers around the world.  We seek to create value by developing drugs with high therapeutic efficacy - curing the cause of the patient's condition with minimal or zero disease recurrence or antimicrobial resistance, for the longest extent possible - and minimizing the trauma caused to the patient and healthcare ecosystem by minimizing serious side effects, disease recurrence, and inaccessibility to our treatments as a result of financial or other barriers.  Currently, Summit’s lead product candidate, ridinilazole, is engaged in two global Phase 3 trials, Ri-CoDIFy 1 & 2, each enrolling approximately 680 patients vs. the standard of care (vancomycin) for the treatment and reduction of recurrence of C. difficile infections.  Commercialization of ridinilazole for the treatment and the reduction of recurrence of CDI is subject to regulatory approvals.

For more information, please visit www.summittxinc.com and follow us on Twitter @summitplc. For more information on the Company’s Discuva Platform, please visit https://www.summittxinc.com/our-science/discuva-platform.

Contact Summit Investor Relations:

Dave Gancarz
Vice President, Investor Relations & Corporate Strategy
david.gancarz@summitplc.com

General Inquiries: 
investors@summitplc.com

Summit Forward-looking Statements

Any statements in this press release about the Company’s future expectations, plans and prospects, including but not limited to, statements about the clinical and preclinical development of the Company’s product candidates, the therapeutic potential of the Company’s product candidates, the potential commercialization of the Company’s product candidates, the timing of initiation, completion and availability of data from clinical trials, the potential submission of applications for marketing approvals, the impact of the COVID-19 pandemic on the Company’s operations and clinical trials and other statements containing the words "anticipate," "believe," "continue," "could," "estimate," "expect," "intend," "may," "plan," "potential," "predict," "project," "should," "target," "would," and similar expressions, constitute forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including: the uncertainties inherent in the initiation of future clinical trials, availability and timing of data from ongoing and future clinical trials and the results of such trials, global public health crises, including the coronavirus COVID-19 outbreak, that may affect timing and status of our clinical trials and operations, whether preliminary results from a clinical trial will be predictive of the final results of that trial or whether results of early clinical trials or preclinical studies will be indicative of the results of later clinical trials, expectations for regulatory approvals, laws and regulations affecting government contracts and funding awards, availability of funding sufficient for the Company’s foreseeable and unforeseeable operating expenses and capital expenditure requirements and other factors discussed in the "Risk Factors" section of filings that the Company makes with the Securities and Exchange Commission. Accordingly, readers should not place undue reliance on forward-looking statements or information. In addition, any forward-looking statements included in this press release represent the Company’s views only as of the date of this release and should not be relied upon as representing the Company’s views as of any subsequent date. The Company specifically disclaims any obligation to update any forward-looking statements included in this press release.



CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
(Unaudited)
In thousands, except share and per share data

 Three Months Ended December 31, Twelve Months Ended  December 31, Eleven Months Ended  December 31,
 2020 2019 2020 2019
Revenue:       
Licensing agreements$185   $161   $860   $743  
Total revenue185   161   860   743  
        
Operating expenses:       
Research and development12,264   10,714   53,274   39,809  
General and administrative3,840   4,146   19,232   11,279  
Impairment—   —   859   —  
Total operating expenses16,104   14,860   73,365   51,088  
Other operating income4,363   5,644   19,312   22,872  
Loss from operations(11,556)  (9,055)  (53,193)  (27,473) 
Other income (expense), net(2,006)  (2,703)  283   (1,618) 
Loss before income tax(13,562)  (11,758)  (52,910)  (29,091) 
        
Income tax (expense) benefit21   (64)  213   (36) 
Net loss$(13,541)  $(11,822)  $(52,697)  $(29,127) 
        
Basic loss per share$(0.18)  $(0.34)  $(0.76)  $(0.89) 
Diluted loss per share$(0.18)  $(0.34)  $(0.76)  $(0.89) 
        
Other comprehensive income:       
Foreign currency translation adjustment3,320   3,150   970   51  
Total comprehensive loss$(10,221)  $(8,672)  $(51,727)  $(29,076) 



CONDENSED CONSOLIDATED BALANCE SHEET INFORMATION
(Unaudited)
In thousands


    December 31, 2020 December 31, 2019
       
Cash and cash equivalents   $66,417   $63,842  
Total assets   $102,498   $96,248  
Total liabilities   $23,045   $17,385  
Total stockholders' equity   $79,453   $78,863  



CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW INFORMATION
(Unaudited)
In thousands

  Twelve Months Ended  Eleven Months Ended
  December 31, 2020 December 31, 2019
     
Net cash used in operating activities $(48,111)  $(20,757) 
Net cash used in investing activities (421)  (341) 
Net cash provided by financing activities 50,551   49,505  
Effect of exchange rates in cash and cash equivalents 556   190  
     
Net increase in cash and cash equivalents $2,575   $28,597  
     



Appendix:  Glossary of Critical Terms Contained Herein

Bile acids – a collection of steroid-based gut metabolites, the balance of the amount of and types of bile acids in the gut microbiome are believed to play an important role in the development of or prevention of an initial and potential recurrent infection of Clostridioides difficile.i

Bloodstream infections – an infectious disease defined by the presence of viable bacterial or fungal microorganisms in the bloodstream that elicit or have elicited an inflammatory response.ii

Carbapenem-Resistant Enterobacteriaceae (“CRE”) – Enterobacteriaceae that are resistant to carbapenems, a type of antibiotic used to treat some of the most resistant forms of gram-negative bacteria.  This resistance means that there are fewer options available to treat infections caused by these bacteria, as CRE do not respond to commonly used antibiotics.  In many cases, including infections such as urinary tract infections caused by CRE germs, more complex treatments are required. Instead of taking oral antibiotics at home, patients with these infections might require hospitalization and intravenous (IV) antibiotics.  Occasionally CRE are resistant to all available antibiotics.  CRE are a threat to public health.iii

Clostridioides difficile (C. difficile or C. diff.) – a germ (bacterium) that can cause severe diarrhea and colitis (an inflammation of the colon).  C. difficile can live naturally in the intestines (gut) of humans and not cause any problem. Sometimes changes in the gut microbiome lead the bacteria to grow and produce toxins from which illness can develop.iv

C. diff. Infection (CDI) – a bacterial infection of the colon that produces toxins causing inflammation of the colon and severe watery diarrhea, very painful and persistent abdominal cramping, nausea, fever, and dehydration. CDI can also result in more serious disease complications, including bowel perforation (a tear in the gastrointestinal tract), sepsis, and death.  Most cases of C. diff. infection occur while a person is taking antibiotics or not long after a person has finished taking antibiotics.  CDI is an insidious and debilitating disease that necessitates patient isolation because of its contagious nature, making it able to be passed from one person to another either in a hospital or long-term care facility setting or in the community.v

DDS-04 – a series of new mechanism antibiotics targeting Enterobacteriaceae.  DDS-04 acts via LolCDE, an essential bacterial complex responsible for the transport of lipoproteins from the inner to outer membrane in gram-negative bacteria.  Because this complex has not been a previous target of existing antimicrobials, bacterial resistance does not yet exist to this targeted approach, potentially allowing for the treatment of highly-resistant Enterobacteriaceae-caused infections.  Some of these infections, particularly in a subset of CRE-caused infections, do not have effective treatments through currently available antibiotics.vi

Discuva Platform – Summit Therapeutics’ proprietary platform that enables the identification of novel antimicrobials to expand Summit’s pipeline of investigational drugs.  The Discuva Platform focuses on identifying new antibiotics against bacteria where increasing resistance has limited treatment via existing antibiotics currently on the market.vii

Enterobacteriaceae – a large family of different types of bacteria (germs) that commonly cause infections both in healthcare settings, such as hospitals and long-term care facilities, and in communities. Examples of germs in the Enterobacteriaceae family include Escherichia coli (commonly known as E. coli) and Klebsiella pneumoniae.  Enterobacteriaceae are frequent carriers of resistance genes to many of the currently available antibiotics used to treat bacterial infections.  Because they are bacteria, Enterobacteriaceae can be passed from person to person.viii

Escherichia coli (E. coli) – a type of Enterobacteriaceae found in the environment, foods, and intestines of people and animals. E. coli are a large and diverse group of bacteria. Although most strains of E. coli are harmless, others can make a person sick. Some kinds of E. coli can cause diarrhea, while others cause urinary tract infections, bloodstream infections, respiratory illness and pneumonia, and other illnesses.ix

Gastrointestinal tract – a series of hollow organs joined in a long, twisting tube from the mouth to the anus.  These organs also include the esophagus, stomach, small intestine, and large intestine.x

Gut microbiome – within the human gastrointestinal tract, the gut microbiome is a collection of microbiota, consisting of trillions of microorganisms that inhabit the gut.  The gut microbiota is considered an important partner to human cell systems, interacting extensively with other organs in the body to influence a wide range of functions from digestion to immunity.  The balance of the different types of cells and microorganisms within the microbiome is considered to be important in the microbiome's ability to properly play its role within the human body.  Disruption in the balance of microorganisms within the gut microbiome (known as dysbiosis) is believed to impact its role in keeping a person healthy and free of certain conditions or diseases.xi xii

Hospital-acquired pneumonia (HAP) – pneumonia that occurs 48 hours or more after a patient has been admitted to a hospital and was not present and incubating at the time of admission.  Ventilator-associated pneumonia (VAP) is a significant sub-set of HAP, often occurring in intensive care units (ICUs) with a patient on a ventilator.  Common pathogens of HAP and VAP include Enterobacteriaceae and Pseudomonas species.  Due to the presence of the bacteria in a hospital, these bacteria may be resistant to different antibiotics, potentially causing the resulting infection to be more difficult to treat.xiii

Klebsiella pneumoniae – a type of Enterobacteriaceae that can cause different types of healthcare-associated infections, including pneumonia, bloodstream infections, wound or surgical site infections, and meningitis. Increasingly, Klebsiella bacteria have developed resistance to antibiotics, most recently to the class of antibiotics known as carbapenems. Klebsiella bacteria are normally found in the human intestines (where they do not cause disease).  In healthcare settings, Klebsiella infections commonly occur among sick patients who are receiving treatment for other conditions.  Patients whose care requires devices like ventilators (breathing machines) or intravenous (vein) catheters, and patients who are receiving long courses of certain antibiotics are most at risk for Klebsiella infections. Healthy people typically do not develop Klebsiella infections.xiv

Ri-CoDIFy Clinical Trials – Two clinical trials in the Phase 3 stage of drug development for ridinilazole, a novel antibiotic being tested by Summit Therapeutics for the treatment of CDI.  The goal of the clinical trials is to achieve comparable cure rates of CDI to the current standard of care (vancomycin) and reduce rates of recurrent CDI.xv

Sepsis – the body’s extreme response to an infection and a life-threatening medical emergency.  Sepsis occurs when an existing infection triggers a chain reaction throughout a person’s body via the bloodstream.  Without timely treatment, sepsis can rapidly lead to tissue damage, multi-organ failure, and death.  Almost any type of infection can lead to sepsis. Infections that lead to sepsis most often start in the lung, urinary tract, skin, or gastrointestinal tract.  Sepsis is a condition and is not contagious; however, the underlying cause of the infection (e.g., bacteria) can be spread from person to person.  Bacterial infections cause most cases of sepsis.xvi

Urinary tract infections (UTI) – common infections that happen when bacteria, often from the skin or rectum, enter the urethra, and infect the urinary tract. The infections can affect several parts of the urinary tract, but the most common type is a bladder infection.  Kidney infections are another type of UTI and can be more serious than bladder infections.  UTIs are usually caused by bacteria and are treated with antibiotics. People who have had multiple UTIs requiring multiple courses of antibiotics are at increased risk of developing antibiotic-resistant infections that can become increasing complex to treat.xvii

Vancomycin – an antibiotic that is used to treat CDI when taken by mouth.

_____________________________

i Qian, X, et. al. Ridinilazole, a narrow spectrum antibiotic for treatment of Clostridioides difficile infection, enhances preservation of microbiota-dependent bile acids.  Am J Physiol Gasterintest Liver Physiol 319: G227-G237, 2020.

ii Viscoli C. Bloodstream Infections: The peak of the iceberg. Virulence. 7(3):248-251, 2016.

iii United States Centers for Disease Control and Prevention.  https://www.cdc.gov/hai/organisms/cre/index.html.  Accessed February 2021.

iv Virginia Department of Health.  https://www.vdh.virginia.gov/epidemiology/epidemiology-fact-sheets/clostridiodes-difficile/.  Accessed February 2021.

v United States Centers for Disease Control and Prevention.  https://www.cdc.gov/cdiff/what-is.html.  Accessed February 2021.

vi Summit Therapeutics, Inc.  https://www.summittxinc.com/our-programmes/enterobacteriaceae/.  Accessed February 2021.

vii Summit Therapeutics, Inc.  https://www.summittxinc.com/our-science/discuva-platform/.  Accessed February 2021.

viii United States Centers for Disease Control and Prevention.  https://www.cdc.gov/hai/organisms/ESBL.html.  Accessed February 2021.

ix United States Centers for Disease Control and Prevention.  https://www.cdc.gov/ecoli/index.html.  Accessed February 2021.

x US National Institute of Health, National Institute of Diabetes and Digestive and Kidney Diseases.  https://www.niddk.nih.gov/health-information/digestive-diseases/digestive-system-how-it-works.  Accessed February 2021.

xi Cani PD.  Human gut microbiome: hopes, threats and promises.  British Medical Journal (BMJ) Gut 67:1716-1725, 2018.

xii Qian, X, et. al. Ridinilazole, a narrow spectrum antibiotic for treatment of Clostridioides difficile infection, enhances preservation of microbiota-dependent bile acids.  Am J Physiol Gasterintest Liver Physiol 319: G227-G237, 2020.

xiii Shebl E, Gulick PG. Nosocomial Pneumonia. StatPearls.  Updated 2020 Jul 21.

xiv United States Centers for Disease Control and Prevention.  https://www.cdc.gov/hai/organisms/klebsiella/klebsiella.html.  Accessed February 2021.

xv Ri-CoDIFy 1 and Ri-CoDIFy 2 as per ClinicalTrials.gov.  https://clinicaltrials.gov/ct2/show/NCT03595553 and https://clinicaltrials.gov/ct2/show/NCT03595566.  Accessed February 2021.

xvi United States Centers for Disease Control and Prevention.  https://www.cdc.gov/sepsis/index.html.  Accessed February 2021.

xvii United States Centers for Disease Control and Prevention.  https://www.cdc.gov/antibiotic-use/community/for-patients/common-illnesses/uti.html.  Accessed February 2021.


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