CAMBRIDGE, Mass., April 1, 2019 /PRNewswire/ -- TCR² Therapeutics Inc. (Nasdaq: TCRR), a clinical-stage immunotherapy company developing the next generation of novel T cell therapies for patients suffering from cancer, today reported financial results for the fourth quarter and full year ended December 31, 2018 and provided a corporate update.

"TCR² has achieved important scientific, clinical, and operational milestones over the past year," said Garry Menzel, Ph.D., President and Chief Executive Officer of TCR² Therapeutics. "Although adoptive T cell therapies have made significant progress in the fight against cancer, our TRuC platform has the potential to both improve upon existing options and expand their use. TC-210 has cleared its IND and we have initiated our Phase 1/2 clinical trial, with initial data expected later this year. We also remain on track to submit an IND for TC-110 in the second half of 2019. In February, we successfully completed our initial public offering, a significant step for the Company which further strengthened our financial position."

2018 Corporate Highlights

• Advanced TC-210, TCR²'s lead T cell receptor (TCR) Fusion Construct T cell (TRuC™ T cell) product candidate, to investigational new drug (IND) application submission in December 2018 and IND clearance by the U.S. Food and Drug Administration (FDA) in January 2019. TCR² engineered TC-210 T cells to target and kill mesothelin-expressing cancers while engaging the entire TCR, independent of human leukocyte antigens (HLA). In preclinical studies, TC-210 has demonstrated better anti-tumor activity, longer persistence, and lower cytokine release compared to chimeric antigen receptor (CAR)-T cells engineered with the same mesothelin binder. TCR² initiated a Phase 1/2 clinical trial for TC-210 to treat patients with mesothelin-positive solid tumors, including non-small cell lung cancer (NSCLC), ovarian cancer, malignant pleural/peritoneal mesothelioma, and cholangiocarcinoma. TCR² expects to generate its first clinical data for TC-210 in the second half of 2019.
• Expanded the TCR² pipeline, initiating IND-enabling studies for TC-110 and TC-220 product candidates, and building next-generation enhancements into the TRuC platform.
  • TC-110 is a CD19 targeted TRuC-T cell product candidate designed to treat patients with CD19-positive B-cell hematological malignancies, including diffuse large B-cell lymphoma (DLBCL), adult acute lymphoblastic leukemia (aALL), follicular lymphoma (FL), and other non-Hodgkin lymphoma (NHL) subtypes. In preclinical studies, TC-110 has shown better anti-tumor activity and persistence compared to CD28 and 4-1BB CAR-T cells engineered with the same CD19 binder, while also exhibiting lower levels of cytokine release.
  • TC-220 is a MUC16 (Mucin 16, Cell Surface Associated)-targeted TRuC-T cell product candidate designed to treat patients with MUC16-positive solid tumors. MUC16 is highly expressed in many solid tumors, including ovarian, pancreatic, gastric, and colorectal cancers. TC-220 has shown strong anti-tumor activity in preclinical models of MUC16-positive ovarian cancers. TCR² plans to file an IND for TC-220 in the first half of 2020.
  • TCR² is developing several additional tools that may be incorporated into future TRuC product candidates to overcome tumor defense mechanisms, including dual-antigen targeting and strategies to counter the immunosuppressive microenvironment of solid tumors. TCR² is also evaluating multiple proprietary designs for allogeneic, or off the shelf, TRuC-T cells.
• Established semi-automated Good Manufacturing Practice (GMP) manufacturing process. TCR² currently manufactures GMP-grade clinical lots for TC-210 through third-party contractors. In December 2018, TCR² entered into an agreement with Cell and Gene Therapy (CGT) Catapult Limited (Catapult), which will allow TCR² to manufacture TRuC-T cells using its own personnel at CGT Catapult's facility in Stevenage, UK. The TCR² CGT Catapult facility is expected to be operational in the second half of 2019. At full capacity, TCR² estimates this facility would expand its manufacturing capacity to a total of approximately 400 treatments per year.
• Raised $125 million in an oversubscribed Series B financing round in March 2018. The financing was co-led by 6 Dimensions Capital and Curative Ventures with participation from new investors Redmile and Arrowmark and all of TCR²'s Series A investors.
• Strengthened its management and board in 2018. This included adding Ian Somaiya as Chief Financial Officer, along with Neil Gibson Ph.D. and Andrew Allen M.D., Ph.D. to the Board of Directors.

Recent Developments

• In January 2019, the FDA cleared the IND for TC-210. TCR² initiated its Phase 1/2 trial to treat patients with NSCLC, ovarian cancer, malignant pleural/peritoneal mesothelioma, and cholangiocarcinoma. TCR² expects to generate initial data from the trial in the second half of 2019.
• In February 2019, TCR² completed an initial public offering pursuant to which it issued and sold 5,750,000 shares of common stock, including full exercise of the underwriters' over-allotment option, resulting in net proceeds of $80.2 million after deducting underwriting discounts and commissions and other offering expenses.
• In February 2019, the FDA granted orphan drug designation to TC-210 for the treatment of mesothelioma.
• TCR² recently held a pre-IND meeting with the FDA and remains on track to submit an IND for TC-110 in the second half of 2019.
• In February 2019, the United States Patent and Trademark Office issued U.S. Patent No.: 10,208,285, with claims covering TCR²'s TRuC-T cells that express anti-mesothelin TCR fusion proteins, including TC-210.

Anticipated Milestones

TCR² plans to advance its first three TRuC-T cell product candidates into clinical trials by the first half of 2020, while also establishing and expanding its manufacturing capabilities through its collaboration with CGT Catapult.

• TC-210 - release initial Phase 1 data from the Phase 1/2 trial in 2H 2019.
• TC-110 - IND submission in 2H 2019.
• TC-220 - IND submission in 1H 2020.
• Catapult manufacturing facility - operational in 2H 2019.

Financial Highlights

• TCR² ended 2018 with $123.2 million in cash, cash equivalents, and investments compared to $19.8 million as of December 31, 2017. Net cash from financing activities for the year ended December 31, 2018 was $123.0 million compared to $16.2 for the year ended December 31, 2017. Net cash used in operations was $18.8 million for the year ended December 31, 2018 compared to $12.0 million for the year ended December 31, 2017.
• Net loss for the year ended December 31, 2018 was $24.3 million compared to $13.1 million for the year ended December 31, 2017.
• Research and development expenses were $19.7 million for the year ended December 31, 2018 compared to $9.6 million for the year ended December 31, 2017. The increase in R&D expenses is primarily related to increase in headcount and preclinical development of our lead solid tumor product candidate, TC-210.
• General and administrative expenses were $6.8 million for the year ended December 31, 2018, compared to $3.6 million for the year ended December 31, 2017. The increase in general and administrative expenses was primarily due to an increase in personnel costs.

Upcoming Events

Members of the TCR² Therapeutics management team are scheduled to present at the following upcoming conferences.

• Jefferies Immuno-Oncology Cell Therapy Summit: Alfonso Quintás Cardama, M.D., Chief Medical Officer, will present on Friday, April 5, 2019 at 7:30 am ET in Boston, MA.
• 4th Annual CAR-T Congress USA: Robert Hofmeister Ph.D., Chief Scientific Officer, will present on Wednesday, April 17, 2019 at 9:40 am ET in Boston, MA.
• Class of 2018 Biotech IPOs Investor Day: Ian Somaiya, Chief Financial Officer, will present on Friday, April 26, 2019 at the offices of Davis Polk in New York, NY.
• BioTrinity 2019: Garry Menzel, Ph.D., President and CEO, will present on Tuesday, April 30, 2019 in London, UK.

About TCR² Therapeutics
TCR² Therapeutics Inc. is a clinical-stage immunotherapy company developing the next generation of novel T cell therapies for patients suffering from cancer. TCR²'s proprietary T cell receptor (TCR) Fusion Construct T cells (TRuC-T™ cells) specifically recognize and kill cancer cells by harnessing signaling from the entire TCR, independent of human leukocyte antigens (HLA). In preclinical studies, TRuC-T cells have demonstrated superior anti-tumor activity compared to chimeric antigen receptor T cells (CAR-T cells), while exhibiting lower levels of cytokine release. The Company's lead TRuC-T cell product candidate, TC-210, is currently being studied in a Phase 1/2 clinical trial to treat patients with mesothelin-positive non-small cell lung cancer (NSCLC), ovarian cancer, malignant pleural/peritoneal mesothelioma, and cholangiocarincoma. For more information about TCR², please visit www.tcr2.com.

Forward-looking Statements
This press release contains forward-looking statements and information within the meaning of the Private Securities Litigation Reform Act of 1995 and other federal securities laws. The use of words such as "may," "will," "could", "should," "expects," "intends," "plans," "anticipates," "believes," "estimates," "predicts," "projects," "seeks," "endeavor," "potential," "continue" or the negative of such words or other similar expressions can be used to identify forward-looking statements. These forward-looking statements include, but are not limited to, express or implied statements regarding TCR²'s plans to submit an IND for TC-110 in the second half of 2019; the generation of clinical data for TC-210 in the second half of 2019; expectations that TCR²'s Catapult facility will be operational in the second half of 2019 and related effects on TCR²'s manufacturing capacity in the future; and TCR²'s plans to advance its first three TRuC product candidates into clinical trials by the first half of 2020.

The express or implied forward-looking statements included in this press release are only predictions and are subject to a number of risks, uncertainties and assumptions, including, without limitation: uncertainties inherent in clinical studies and in the availability and timing of data from ongoing clinical studies; whether interim results from a clinical trial will be predictive of the final results of the trial; whether results from preclinical studies or earlier clinical studies will be predictive of the results of future trials; the expected timing of submissions for regulatory approval or review by governmental authorities, including review under accelerated approval processes; orphan drug designation eligibility; regulatory approvals to conduct trials or to market products; TCR²'s ability to maintain sufficient manufacturing capabilities to support its research, development and commercialization efforts, whether TCR²'s cash resources will be sufficient to fund TCR²'s foreseeable and unforeseeable operating expenses and capital expenditure requirements; and other risks set forth under the caption "Risk Factors" in TCR²'s most recent Annual Report on Form 10-K and its other filings with the Securities and Exchange Commission. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this press release may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements. You should not rely upon forward-looking statements as predictions of future events. Although TCR² believes that the expectations reflected in the forward-looking statements are reasonable, it cannot guarantee that the future results, levels of activity, performance or events and circumstances reflected in the forward-looking statements will be achieved or occur.

Moreover, except as required by law, neither TCR² nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements included in this press release. Any forward-looking statement included in this press release speaks only as of the date on which it was made. We undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise, except as required by law.

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SOURCE TCR2 Therapeutics

Media: Kathy Vincent, (310) 403-8951, kathy@kathyvincent.com; Investors:Ian Somaiya, Chief Financial Officer, (617) 949-5210, ian.somaiya@tcr2.com