Financial Performance - Net loss for the three months ended March 31, 2024, was 15,221,000,comparedtoanetlossof14,445,000 for the same period in 2023, indicating an increase in loss of about 5.4%[6] - The company reported a comprehensive loss of 15,271,000forthethreemonthsendedMarch31,2024,comparedtoacomprehensivelossof14,445,000 for the same period in 2023, reflecting an increase of about 5.7%[6] - The total net loss attributable to common stockholders was 15,221,000,comparedtoanetlossof14,445,000 for the same period in 2023, representing an increase of approximately 5.4%[81] Assets and Liabilities - Total current assets decreased from 30,884,000asofDecember31,2023,to20,558,000 as of March 31, 2024, representing a decline of approximately 33.5%[3] - Total liabilities increased from 43,408,000asofDecember31,2023,to50,102,000 as of March 31, 2024, an increase of about 15.3%[3] - Total stockholders' deficit increased from 84,636,000asofDecember31,2023,to99,574,000 as of March 31, 2024, an increase of about 17.6%[3] - Cash and cash equivalents decreased from 28,769,000asofDecember31,2023,to18,748,000 as of March 31, 2024, a reduction of approximately 34.9%[3] - Cash and cash equivalents decreased to 19.3millionasofMarch31,2024,downfrom25.5 million at the end of 2023, representing a decrease of approximately 24%[12] - The aggregate liquidation preference of convertible preferred stock remained at 87,459,000asofMarch31,2024,consistentwithDecember31,2023[3]ResearchandDevelopment−ResearchanddevelopmentexpensesforthethreemonthsendedMarch31,2024,were10,818,000, down from 12,985,000forthesameperiodin2023,adecreaseofapproximately16.89.3 million in cash from operating activities during the first quarter of 2024, an improvement from 10.8millionusedinthesameperiodof2023[12]−TheCompanypaid381,000 in operating cash flows for operating leases during the three months ended March 31, 2024, compared to 370,000inthesameperiodof2023[53]EquityandStock−Theweighted−averagecommonsharesoutstandingincreasedfrom2,222,800forthethreemonthsendedMarch31,2023,to2,608,740forthesameperiodin2024,anincreaseofapproximately17.380,627,000 as of March 31, 2024[57] - The Company has authorized the issuance of up to 11,947,558 shares of common stock, with 2,637,120 shares issued and outstanding as of March 31, 2024[67] - The 2019 Equity Incentive Plan allows for the issuance of up to 1,991,264 shares of common stock, with stock options being the only equity awards issued to date[68] - The total stock-based compensation expense for the three months ended March 31, 2024, was 321,000,upfrom275,000 in 2023, indicating a year-over-year increase of approximately 16.7%[77] Mergers and Acquisitions - The company completed a merger with AVROBIO, Inc. on June 20, 2024, receiving 77.3millionincashandcompletingthesaleof96.6 million in common stock[16] - The company entered into a merger agreement with AVROBIO on January 30, 2024, with the merger closing on June 20, 2024, treating AVROBIO as the acquired company for financial reporting purposes[91] - Concurrently with the merger, certain investors purchased 7,790,889 shares of the company's common stock for an aggregate purchase price of approximately 96.6million[92]FairValueandLiabilities−ThecompanyincurredachangeinthefairvalueofSAFEliabilitiesamountingtoalossof2,075,000 for the three months ended March 31, 2024[6] - As of March 31, 2024, the SAFE liabilities were valued at 32.59million,upfrom30.52 million as of December 31, 2023, reflecting a fair value adjustment of 2.08million[31]−ThefairvalueoftheSAFEsissuedinOctober2023wasrecognizedat10.4 million, with subsequent measurement resulting in total SAFE liabilities fair value of 32.6millionrecordedinthestatementofoperations[87]CommitmentsandExpenses−TheCompanyhascommitmentsforannualmaintenancefeesandroyaltypaymentsunderitsagreementswithHarvardandAlloyTherapeutics,whichmaytotalinthelowsevendigitsannually[42][46]−TheCompanyhasaremaininginstallmentof56,668 due to Harvard in July 2024 as part of a license agreement[42] - Total lease costs for the three months ended March 31, 2024, amounted to 921,000,anincreaseof4.3883,000 for the same period in 2023[52] Depreciation and Fair Value Adjustments - Depreciation expense for the three months ended March 31, 2024, was 0.3million,comparedto0.2 million for the same period in 2023[36] - The company recorded a change in the fair value of SAFE liabilities amounting to $2.1 million for the first quarter of 2024[12] Tax Assets - The company has maintained a full valuation allowance against its net deferred tax assets as of March 31, 2024, due to cumulative net losses and the likelihood of not realizing the benefits of these assets[79]