La Jolla Pharmaceutical Company Announces Financial Results for the Three and Twelve Months Ended December 31, 2020 and Highlights Corporate Progress

La Jolla Pharmaceutical Company LJPC, which is dedicated to the development and commercialization of innovative therapies that improve outcomes in patients suffering from life-threatening diseases, today announced financial results for the three and twelve months ended December 31, 2021 and highlighted corporate progress.

Corporate Progress

• Exclusive Licensing Agreement for GIAPREZA™ (Angiotensin II) and XERAVA™ (Eravacycline) in Europe: In January 2021, La Jolla Pharmaceutical Company announced that it and certain of its wholly owned subsidiaries (collectively, La Jolla) entered into an exclusive licensing agreement with PAION AG and its wholly owned subsidiary (collectively, PAION) to commercialize GIAPREZA and XERAVA in the European Economic Area, the United Kingdom and Switzerland (the Territories). Under the terms of the exclusive licensing agreement, La Jolla is entitled to receive: (i) an upfront cash payment of $22.5 million; (ii) potential commercial milestone payments of up to $109.5 million; and (iii) double-digit tiered royalty payments based on net sales of GIAPREZA and XERAVA.

• Acquisition of Tetraphase Pharmaceuticals, Inc. (Tetraphase): In July 2020, La Jolla completed its acquisition of Tetraphase, a biopharmaceutical company focused on commercializing its novel tetracycline, XERAVA, to treat serious and life-threatening infections. Financial results for periods ending December 31, 2020 and beyond include Tetraphase's financial results subsequent to the acquisition closing date of July 28, 2020.

• Net Sales: For the three and twelve months ended December 31, 2020, net sales were $11.0 million and $33.4 million, respectively, compared to $7.3 million and $23.1 million, respectively, for the same periods in 2019.
  
  
  • GIAPREZA Net Sales: For the three and twelve months ended December 31, 2020, GIAPREZA U.S. net sales were $8.7 million and $29.3 million, respectively, up 19% and 27%, respectively, from the same periods in 2019.
    
    
  • XERAVA Net Sales: Subsequent to July 28, 2020 and through December 31, 2020, XERAVA U.S. net sales were $4.2 million. For the three and twelve months ended December 31, 2020, including the period prior to the acquisition of Tetraphase, XERAVA U.S. net sales were $2.3 million and $8.2 million, respectively, up 53% and 128%, respectively, from the same periods in 2019.

"2020 was a productive year for La Jolla as we completed the integration of Tetraphase, increased net sales of both products compared to the prior year and reduced our operating costs," said Larry Edwards, President and Chief Executive Officer of La Jolla. "Our agreement with PAION positions us well to serve the needs of patients suffering from life-threatening diseases in both the U.S. and Europe. As we enter 2021, our focus will be on continuing to grow net sales of both GIAPREZA and XERAVA while continuing to manage operating costs."

Financial Results

For the three and twelve months ended December 31, 2020, net sales were $11.0 million and $33.4 million, respectively, compared to $7.3 million and $23.1 million, respectively, for the same periods in 2019.

La Jolla's net loss for the three and twelve months ended December 31, 2020 was $3.5 million and $39.4 million, or $0.13 and $1.44 per share, respectively, compared to $25.2 million and $116.5 million, or $0.93 per share and $4.30 per share, respectively, for the same periods in 2019.

As of December 31, 2020, La Jolla had $21.2 million of cash and cash equivalents. On a pro forma basis, adjusting for $18.9 million of upfront net proceeds from its licensing agreement with PAION, net of the amounts due under the George Washington University and Harvard University license agreements, La Jolla had cash and cash equivalents of $40.1 million.

Net cash used for operating activities for the three and twelve months ended December 31, 2020 was $7.3 million and $37.6 million, respectively, down 57% and 56%, respectively, from the same periods in 2019. Net cash used for operating activities for the three and twelve months ended December 31, 2020, excluding cash expenditures related to reductions in headcount and transaction costs associated with the Tetraphase acquisition, was $5.7 million and $27.2 million, respectively, down 65% and 67%, respectively, from the same periods in 2019. Cash expenditures related to reductions in headcount were $1.6 million and $9.5 million for the three and twelve months ended December 31, 2020, respectively, and $0.9 million and $3.2 million, respectively, for the same periods in 2019. Cash expenditures related to transaction costs associated with the Tetraphase acquisition were zero and $0.9 million for the three and twelve months ended December 31, 2020, respectively.

About GIAPREZA

GIAPREZA™ (angiotensin II) injection is approved by the U.S. Food and Drug Administration (FDA) as a vasoconstrictor indicated to increase blood pressure in adults with septic or other distributive shock. GIAPREZA is approved by the European Commission (EC) for the treatment of refractory hypotension in adults with septic or other distributive shock who remain hypotensive despite adequate volume restitution and application of catecholamines and other available vasopressor therapies. GIAPREZA mimics the body's endogenous angiotensin II peptide, which is central to the renin-angiotensin-aldosterone system, which in turn regulates blood pressure. Prescribing information for GIAPREZA is available at http://www.giapreza.com. The European Summary of Product Characteristics is available on the EMA website: www.ema.europa.eu/en/medicines/human/EPAR/giapreza. GIAPREZA is marketed in the U.S. by La Jolla Pharmaceutical Company on behalf of La Jolla Pharma, LLC, its wholly owned subsidiary, and will be marketed in Europe by PAION AG on behalf of La Jolla Pharma, LLC.

GIAPREZA Important Safety Information

Contraindications

None.

Warnings and Precautions

There is a potential for venous and arterial thrombotic and thromboembolic events in patients who receive GIAPREZA. Use concurrent venous thromboembolism (VTE) prophylaxis.

Adverse Reactions

The most common adverse reactions that were reported in greater than 10% of GIAPREZA-treated patients were thromboembolic events.

Drug Interactions

Angiotensin converting enzyme (ACE) inhibitors may increase response to GIAPREZA. Angiotensin II receptor blockers (ARBs) may reduce response to GIAPREZA.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.

For additional information, please see Full Prescribing Information for the United States and the Summary of Product Characteristics for the European Union.

About XERAVA

XERAVA™ (eravacycline) for injection is approved by the U.S. Food and Drug Administration (FDA) as a tetracycline class antibacterial indicated for the treatment of complicated intra-abdominal infections (cIAI) in patients 18 years of age and older. XERAVA is approved by the European Commission (EC) for the treatment of cIAI in adults. Prescribing information for XERAVA is available at www.xerava.com. XERAVA is marketed in the U.S. by Tetraphase Pharmaceuticals, Inc., a wholly owned subsidiary of La Jolla, and will be marketed in Europe by PAION AG on behalf of Tetraphase Pharmaceuticals, Inc.

XERAVA Important Safety Information

XERAVA is a tetracycline class antibacterial indicated for the treatment of complicated intra-abdominal infections in patients 18 years of age and older.

XERAVA is not indicated for the treatment of complicated urinary tract infections.

To reduce the development of drug-resistant bacteria and maintain the effectiveness of XERAVA and other antibacterial drugs, XERAVA should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria.

XERAVA is contraindicated for use in patients with known hypersensitivity to eravacycline, tetracycline-class antibacterial drugs or to any of the excipients. Life-threatening hypersensitivity (anaphylactic) reactions have been reported with XERAVA.

The use of XERAVA during tooth development (last half of pregnancy, infancy and childhood to the age of eight years) may cause permanent discoloration of the teeth (yellow-gray-brown) and enamel hypoplasia.

The use of XERAVA during the second and third trimester of pregnancy, infancy and childhood up to the age of eight years may cause reversible inhibition of bone growth.

Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents and may range in severity from mild diarrhea to fatal colitis.

The most common adverse reactions observed in clinical trials (incidence ≥ 3%) were infusion site reactions, nausea and vomiting.

XERAVA is structurally similar to tetracycline-class antibacterial drugs and may have similar adverse reactions. Adverse reactions including photosensitivity, pseudotumor cerebri and anti-anabolic action, which has led to increased blood urea nitrogen, azotemia, acidosis, hyperphosphatemia, pancreatitis and abnormal liver function tests, have been reported for other tetracycline-class antibacterial drugs, and may occur with XERAVA. Discontinue XERAVA if any of these adverse reactions are suspected.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/medwatch or call 1-800-FDA-1088.

For additional information, please see Full Prescribing Information for the United States.

About La Jolla Pharmaceutical Company

La Jolla Pharmaceutical Company is dedicated to the development and commercialization of innovative therapies that improve outcomes in patients suffering from life-threatening diseases. GIAPREZA™ (angiotensin II) is approved by the U.S. FDA as a vasoconstrictor indicated to increase blood pressure in adults with septic or other distributive shock. XERAVA™ (eravacycline) is approved by the U.S. FDA for the treatment of complicated intra-abdominal infections. For more information, please visit www.ljpc.com.

Forward-looking Statements

This press release contains "forward-looking statements" as defined by the Private Securities Litigation Reform Act of 1995. We caution investors that forward-looking statements are based on management's expectations and assumptions as of the date of this press release and involve substantial risks and uncertainties that could cause the actual outcomes to differ materially from what we currently expect. These risks and uncertainties include, but are not limited to, those associated with: GIAPREZA™ (angiotensin II) and XERAVA™ (eravacycline) sales; whether La Jolla will realize the benefits from the acquisition of Tetraphase Pharmaceuticals, Inc.; regulatory actions relating to La Jolla's products by the U.S. FDA, European Commission and/or other regulatory authorities; expected future cash flows of La Jolla, including milestone and/or royalty payments resulting from La Jolla's exclusive license agreement with PAION AG; and other risks and uncertainties identified in our filings with the U.S. Securities and Exchange Commission. Forward-looking statements in this press release apply only as of the date made, and we undertake no obligation to update or revise any forward-looking statements to reflect subsequent events or circumstances.

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