Critical Accounting Policies and Use of Estimates
Our discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”). The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in our financial statements. Actual results may differ from these estimates under different assumptions or conditions.
Our significant accounting policies are described in more detail in Note 2 – Significant Accounting Policies in the notes to the Company’s unaudited condensed financial statements contained in this Quarterly Report on Form 10-Q, and specifically Note 2 – Significant Accounting Policies – Stock Based Compensation Expense for a description of our estimates for calculating the fair value of stock option grants.
Results of Operations
Comparison of the Three Months Ended June 30, 2021 and 2020
Revenue
For the three months ended June 30, 2021, revenue was approximately $155,000 compared to approximately $42,000 for the three months ended June 30, 2020, an increase of $113,000. The change was due to increased patent fees related to our collaborations with TGTX in the current period.
Research and Development Expenses
Research and development expenses primarily consist of personnel related expenses, including salaries, benefits, travel, and other related expenses, stock-based compensation, payments made to third parties for license and milestone costs related to in-licensed products and technology, payments made to third party CROs for preclinical and clinical studies, investigative sites for clinical trials, consultants, the cost of acquiring and manufacturing clinical trial materials, costs associated with regulatory filings and patents, laboratory costs and other supplies.
For the three months ended June 30, 2021, research and development expenses were approximately $7.2 million, compared to $3.0 million for the three months ended June 30, 2020, an increase of $4.2 million. The current period research and development expenses primarily consisted of $3.2 million related to clinical costs for our product candidates, $3.0 million related to manufacturing costs and $0.2 million related to stock compensation expense. The prior period research and development expenses primarily consisted of $2.2 million related to clinical costs for our product candidates, $0.3 million related to manufacturing costs of our product candidates, and $0.2 million related to stock compensation expense.
We anticipate our research and development expenses to increase for the remainder of 2021.
General and Administrative Expenses
General and administrative expenses consist primarily of salaries and related expenses, including stock-based compensation, for executives and other administrative personnel, recruitment expenses, professional fees and other corporate expenses, including investor relations, legal activities, and facilities-related expenses.
For the three months ended June 30, 2021, general and administrative expenses were approximately $2.1 million, compared to $1.7 million for the three months ended June 30, 2020, an increase of $0.4 million. The current period general and administrative expenses primarily consisted of stock compensation expense of $0.6 million, $0.3 million related to our issuance of shares to Fortress pursuant to the Founders Agreement in connection with the sale of shares of our common stock, $0.3 million for salary expense, $0.3 million related to legal and accounting fees and $0.1 million related to investor relation fees. The prior period general and administrative expenses primarily consisted of stock compensation expense of $0.6 million, $0.3 million related to salary expenses, $0.3 million related to legal and accounting fees, $0.2 million related to investor relation fees and $0.1 million related to our issuance of shares to Fortress pursuant to the Founders Agreement in connection with the sale of shares of our common stock.
We anticipate our general and administrative expenses will remain relatively consistent for the remainder of 2021.