- Additional clinical data from the ongoing Phase I/IIa trials in advanced NSCLC (CHIRON) and melanoma (THETIS) expected to be available in Q4 2022 -

- Cell & Gene Therapy Catapult manufacturing facility approved by MHRA for cNeT production in CHIRON and THETIS clinical trials -

- Strong cash balance of $202 million supports all planned operations into Q2 2025 -

LONDON, Aug. 09, 2022 (GLOBE NEWSWIRE) -- Achilles Therapeutics plc (NASDAQ:ACHL), a clinical-stage biopharmaceutical company developing precision T cell therapies to treat solid tumors, today announced its financial results for the second quarter ended June 30, 2022, and recent business highlights.

"We remain focused on advancing our lead clinical programs, evaluating cNeT monotherapy in CHIRON for advanced non-small cell lung cancer (NSCLC), and exploring both cNeT monotherapy and the combination with a PD-1 checkpoint inhibitor in THETIS for recurrent or metastatic malignant melanoma. We expect initial activity, safety and translational science data in the fourth quarter of this year from patients receiving higher-dose cNeT products," said Dr Iraj Ali, Chief Executive Officer of Achilles Therapeutics. "We are very pleased that the UK Medicines and Healthcare products Regulatory Agency (MHRA) has now approved Achilles' Cell and Gene Therapy Catapult Manufacturing Centre (Catapult) site to produce cNeT products in the ongoing CHIRON and THETIS clinical trials, significantly increasing our manufacturing capacity for 2022 and beyond."

Business Highlights

On track to present additional clinical data in Q4 2022 from the ongoing Phase I/IIa CHIRON and THETIS clinical trials in patients with advanced NSCLC and recurrent or metastatic melanoma, respectively.
Expanded global manufacturing capacity with the MHRA approval of Achilles' Catapult facility for cNeT production in CHIRON and THETIS and entered into a partnership agreement for clinical manufacturing in the United States with the Center for Breakthrough Medicines, a contract development and manufacturing organization in King of Prussia, PA.
Awarded a €4 million ($4.2 million¹) research and innovation award as part of a consortium to develop a first-in-class smart bioprocessing manufacturing platform, with €1.4 million ($1.5 million¹) allocated to Achilles.
Initiated the tumor archiving program (TAP) to study the potential of producing cNeT from tumor material collected and stored earlier in disease progression.
Strengthened the Company's leadership with the following appointments: Bernhard Ehmer to the Board of Directors, James Taylor as Chief Business Officer, and Cassian Yee, MD to the Scientific Advisory Board.
Received the 2022 Pharmaceutical Industry Network Group (PING) Innovation Award, acknowledging the innovation demonstrated by the Company's work with clonal neoantigens to treat solid tumors, including the Company's AI-powered PELEUS™ bioinformatics platform and proprietary VELOS™ manufacturing process.

Financial Highlights

Cash and cash equivalents: Cash and cash equivalents were $201.6 million as of June 30, 2022, as compared to $266.3 million as of December 31, 2021. The Company anticipates that its cash and cash equivalents are sufficient to fund its planned operations into the second quarter of 2025, including completion of the ongoing Phase I/IIa CHIRON and THETIS clinical trials.
Research and development (R&D) expenses: R&D expenses were $14.8 million for the second quarter ended June 30, 2022, as compared to $10.8 million for the second quarter ended June 30, 2021. The increase was primarily driven by increased activity related to our ongoing clinical trials and overall R&D.
General and administrative (G&A) expenses: G&A expenses were $5.8 million for the second quarter ended June 30, 2022, as compared to $5.4 million for the second quarter ended June 30, 2021. The increase was primarily driven by an increase in headcount and related personnel costs.
Net loss: Net loss for the second quarter ended June 30, 2022, was $17.3 million or $0.44 per share compared to $16.2 million, or $0.45 per share for the second quarter ended June 30, 2021.

Achilles will participate in the following investor and medical conferences in August and September 2022. Additional details will be available in the Events & Presentations section of the Company's website:

BTIG Biotechnology Conference 2022: August 8 – 9, 2022
Phacilitate Advanced Therapies Europe: August 31 – September 1, 2022
H.C. Wainwright Annual Global Investment Conference: September 12 – 14, 2022
Cantor Fitzgerald's Cell & Genetic Medicines Conference: September 15, 2022
Immuno UK: September 29 – 30, 2022

About Achilles Therapeutics

Achilles is a clinical-stage biopharmaceutical company developing precision T cell therapies targeting clonal neoantigens: protein markers unique to the individual that are expressed on the surface of every cancer cell. The Company has two ongoing Phase I/IIa trials, the CHIRON trial in patients with advanced non-small cell lung cancer (NSCLC) and the THETIS trial in patients with recurrent or metastatic melanoma. Achilles uses DNA sequencing data from each patient, together with its proprietary AI-Powered PELEUS™ bioinformatics platform, to identify clonal neoantigens specific to that patient, and then develop precision T cell-based product candidates specifically targeting those clonal neoantigens.

Forward-Looking Statements

This press release contains express or implied forward-looking statements that are based on our management's belief and assumptions and on information currently available to our management. Although we believe that the expectations reflected in these forward-looking statements are reasonable, these statements relate to future events or our future operational or financial performance, and involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance, or achievements to be materially different from any future results, performance or achievements expressed or implied by these forward-looking statements. The forward-looking statements in this press release represent our views as of the date of this press release. We anticipate that subsequent events and developments will cause our views to change. However, while we may elect to update these forward-looking statements at some point in the future, we have no current intention of doing so except to the extent required by applicable law. You should therefore not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this press release.

¹ June 30, 2022 exchange rate of €1.000 = $1.043

Investors:

Achilles Therapeutics

Lee M. Stern, VP, IR & External Communications

l.stern@achillestx.com

LifeSci Advisors

John Mullaly

jmullaly@lifesciadvisors.com

Media:

Consilium Strategic Communications

Mary-Jane Elliott, Sukaina Virji, Melissa Gardiner

+44 (0) 203 709 5000

achillestx@consilium-comms.com

ACHILLES THERAPEUTICS PLC

Condensed Consolidated Balance Sheets (Unaudited)

(in thousands, except share and per share amounts)

(expressed in U.S. Dollars, unless otherwise stated)

	June 30,			December 31,
	2022			2021
ASSETS
Current assets:
Cash and cash equivalents	$	201,595		$	266,319
Prepaid expenses and other current assets		25,985			18,430
Total current assets		227,580			284,749
Non-current assets:
Property and equipment, net		17,626			17,743
Operating lease right of use assets		9,470			11,048
Deferred tax assets		26			26
Restricted cash		33			33
Other assets		2,983			3,507
Total non-current assets		30,138			32,357
TOTAL ASSETS	$	257,718		$	317,106
LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	6,651		$	3,722
Income taxes payable		18			—
Accrued expenses and other liabilities		8,720			10,906
Operating lease liabilities-current		4,480			4,482
Total current liabilities		19,869			19,110
Non-current liabilities:
Operating lease liabilities-non-current		5,640			7,777
Other long-term liability		621			691
Total non-current liabilities		6,261			8,468
Total liabilities		26,130			27,578
Commitments and contingencies (Note 12)
Shareholders' equity:
Ordinary shares, £0.001 par value; 40,774,014 and 40,603,489 shares authorized, issued and outstanding at June 30, 2022 and December 31, 2021, respectively		54			54
Deferred shares, £92,451.851 par value, one share authorized, issued and outstanding at June 30, 2022 and December 31, 2021		128			128
Additional paid in capital		405,504			401,821
Accumulated other comprehensive (loss) income		(20,343	)		6,636
Accumulated deficit		(153,755	)		(119,111	)
Total shareholders' equity		231,588			289,528
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$	257,718		$	317,106

ACHILLES THERAPEUTICS PLC

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited)

(in thousands, except share and per share amounts)

	Three Months Ended June 30,						Six Months Ended June 30,
	2022			2021			2022			2021
OPERATING EXPENSES:
Research and development	$	14,776		$	10,844		$	27,790		$	19,720
General and administrative		5,770			5,445			11,725			10,277
Total operating expenses		20,546			16,289			39,515			29,997
Loss from operations		(20,546	)		(16,289	)		(39,515	)		(29,997	)
OTHER INCOME, NET:
Other income		3,271			146			4,900			101
Total other income, net		3,271			146			4,900			101
Loss before provision for income taxes		(17,275	)		(16,143	)		(34,615	)		(29,896	)
Provision for income taxes		(14	)		(13	)		(29	)		(25	)
Net loss		(17,289	)		(16,156	)		(34,644	)		(29,921	)
Other comprehensive income:
Foreign exchange translation adjustment		(19,302	)		(925	)		(26,979	)		1,138
Comprehensive loss	$	(36,591	)	$	(17,081	)	$	(61,623	)	$	(28,783	)
Net loss per share attributable to ordinary shareholders—basic and diluted	$	(0.44	)	$	(0.45	)	$	(0.89	)	$	(1.60	)
Weighted average ordinary shares outstanding—basic and diluted		39,104,375			35,683,187			38,998,686			18,756,599