drug manufacturing costs and non-clinical and preclinical expenses incurred under the Shared Services Agreement with Dong-A as compared to $2.2 million for the nine months ended September 30, 2023.
Our general and administrative expenses for the nine months ended September 30, 2024 were $5.7 million, an increase of $0.8 million, or 16.3%, compared to the nine months ended September 30, 2023. This increase was primarily attributable to $0.9 million in higher employee compensation and benefits, partially offset by $0.1 million in lower legal and professional fees.
Total other income
Our total other income for the nine months ended September 30, 2024 was $0.8 million, a decrease of $2.3 million, or 73.7%, compared to the nine months ended September 30, 2023. This decrease was primarily attributable to $2.8 million in lower gain related to the change in fair value of warrant liabilities, partially offset by $0.5 million of higher interest income earned on our cash balance.
Provision for income taxes
Our effective tax rate for the nine months ended September 30, 2024 and 2023 was zero percent as we have recorded a full valuation allowance for the income tax benefits attributable to our pre-tax losses.
Net loss
For the nine months ended September 30, 2024, we had a net loss of $22.4 million, or $3.24 per share of basic and diluted common stock, compared to a net loss of $7.2 million, or $1.41 per share of basic and diluted common stock for the nine months ended September 30, 2023, primarily due to the factors described above.
Going concern
The determination as to whether we can continue as a going concern contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. Our condensed consolidated financial statements have been prepared assuming that we will continue as a going concern and do not include any adjustments that might result from the outcome of this uncertainty. This basis of accounting contemplates the recovery of our assets and the satisfaction of our liabilities in the normal course of business.
As reflected in the condensed consolidated financial statements, we had $21.7 million in cash as of September 30, 2024. We have experienced net losses and negative cash flows from operating activities since our inception and had an accumulated deficit of $130.7 million as of September 30, 2024. We have incurred a net loss of $22.4 million and net cash used in operating activities of $19.3 million for the nine months ended September 30, 2024. Due in large part to the ongoing Phase 2a clinical trial for DA-1241 and Phase 1 clinical trial for DA-1726, we expect to continue to incur net losses and negative cash flows from operating activities for the foreseeable future. These conditions raise substantial doubt about our ability to continue as a going concern within one year from the issuance of these condensed consolidated financial statements.
We believe that our existing cash will be sufficient to fund our operations into the third quarter of 2025. We plan to continue to fund our operations from equity offerings, debt financings, or other sources, potentially including collaborations, out-licensing and other similar arrangements. There can be no assurance that we will be able to obtain any sources of financing on acceptable terms, or at all, or that the Series A Warrants will be exercised. To the extent that we can raise additional funds by issuing equity securities or in the event our existing warrants are exercised, our stockholders may experience significant dilution. Any debt financing, if available, may involve restrictive covenants that impact our ability to conduct our business. If we are unable to raise additional capital, we may slow down or stop our ongoing and planned clinical trials until such time as additional capital is raised and this may have a material adverse effect on us.
Liquidity and capital resources
Our primary use of cash is to fund our R&D activities. We have funded our operations primarily through public offerings