Item 8.01. Other Events.

On May 28, 2009, MediciNova, Inc. issued a press release (the "Press Release") announcing that it is modifying the dosing regimen for its ongoing Phase II clinical trial (MN-221-CL-007) evaluating the safety and efficacy of MN-221 in patients with severe, acute exacerbations of asthma. A copy of the Press Release is attached hereto as Exhibit 99.1.

The information in this Current Report on Form 8-K being provided under this Item 8.01, including Exhibit 99.1 furnished herewith, is being furnished and shall not be deemed "filed" for any purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of such Section. The information in this current report on Form 8-K shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

3.1(1) Restated Certificate of Incorporation of MediciNova, Inc., as amended.

99.1 Press Release dated May 28, 2009.

(1) As previously disclosed on June 10, 2008, MediciNova, Inc.'s stockholders approved an increase in the authorized number of shares of common stock, par value $0.001, from 20,000,000 to 30,000,000. The Restated Certificate of Incorporation reflecting the associated amendment is filed herewith as it inadvertently was not included in the prior filing.

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