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                                 UNITED STATES                                  
                       SECURITIES AND EXCHANGE COMMISSION                       
                             Washington, D.C. 20549                             

                                      FORM                                      
                                      8-K                                       

                                 CURRENT REPORT                                 
     Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934     

               Date of Report (Date of Earliest Event Reported):                
                                  May 24, 2024                                  


                     Summit Therapeutics Inc.                      
      (Exact Name of Registrant as Specified in Its Charter)       
                                                                   
           Delaware              001-36866         37-1979717      
 (State or Other Jurisdiction   (Commission       (IRS Employer    
      of Incorporation)         File Number)   Identification No.) 
                                                                   
     601 Brickell Key Drive, Suite 1000               33131        
                      ,                                            
                    Miami                                          
                      ,                                            
                     FL                                            
  (Address of Principal Executive Offices)         (Zip Code)      


              Registrant's Telephone Number, Including Area Code:               
                                     (305)                                      
                                    203-2034                                    


                       Not applicable                        
(Former Name or Former Address, If Changed Since Last Report)


Check the appropriate box below if the Form 8-K filing is intended to 
simultaneously satisfy the filing obligation of the registrant under any of 
the following provisions (
see
General Instruction A.2. below):


Written communications pursuant to Rule 425 under the Securities Act (17 CFR 
230.425)


Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 
240.14a-12)


Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange 
Act (17 CFR 240.14d-2(b))


Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange 
Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:

           Title of Each Class             Trading Symbol(s)   Name of Each Exchange on Which Registered 
 Common stock, $0.01 par value per share         SMMT                 The Nasdaq Stock Market LLC        

Indicate by check mark whether the registrant is an emerging growth company as 
defined in Rule 405 of the Securities Act of 1933 ((s)230.405 of this chapter) 
or Rule 12b-2 of the Securities Exchange Act of 1934 ((s)240.12b-2 of this 
chapter).
Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has 
elected not to use the extended transition period for complying with any new 
or revised financial accounting standards provided pursuant to Section 13(a) 
of the Exchange Act.

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Item 8.01   Other Events.  

On May 24, 2024, the National Medical Products Administration (NMPA), the 
regulatory authority in China responsible for providing marketing 
authorization for clinical drug candidates, has approved ivonescimab in 
combination with chemotherapy for use in patients with epidermal growth factor 
receptor (EGFR) mutated, locally advanced or metastatic non-squamous non-small 
cell lung cancer (NSCLC) who have progressed after treatment with an EGFR 
tyrosine kinase inhibitor (TKI).
This is the first approval for ivonescimab by any regulatory authority. The 
approval for ivonescimab was based on the trial called HARMONi-A (AK112-301), 
a single region Phase III clinical trial conducted in China comparing 
ivonescimab plus chemotherapy vs. placebo plus chemotherapy in the 
aforementioned setting. The trial was sponsored by our partner, Akeso, Inc. 
(Akeso). Data for this trial was generated and analyzed by Akeso. This data is 
planned to be released at the 2024 American Society of Clinical Oncology 
(ASCO) Annual Meeting during an oral presentation on Friday, May 31, 2024, 
scheduled for 4:57pm CT.
On May 23, 2024, ASCO released abstracts for presentations to take place 
during the Annual Meeting. Included in these abstracts, was topline data 
associated with HARMONi-A. Notably, patients receiving ivonescimab plus 
chemotherapy experienced a median progression free survival (PFS) by 
independent radiology review committee (IRRC) of 7.06 months (95% CI: 5.85 - 
8.74) as compared to 4.80 months (95% CI: 4.21 - 5.55) for those patients 
receiving chemotherapy alone (hazard ratio: 0.46; 95% CI: 0.34 - 0.62).
Grade e3 treatment emergent adverse events (TEAEs) occurred in 61.5% patients 
receiving ivonescimab plus chemotherapy as compared to 49.1% patients 
receiving chemotherapy; the most common grade e3 TEAEs were chemotherapy 
related adverse events.
Additional data and context including, but not limited to, response rates, 
stable disease rates, progression free survival, overall survival, and safety 
is expected to be made available during ASCO's Annual Meeting.
The abstract can be found here (Abstract 8508): https://meetings.asco.org/2024-a
sco-annual-meeting/15779?presentation=232409#232409
Ivonescimab is not approved by any regulatory authority in Summit's license 
territories, which includes the United States, as well as, Canada, Europe, and 
Japan.
The approval in China by the NMPA does not change Summit's current clinical 
development plan. Summit continues to enroll patients in its two multi-regional 
Phase III clinical trials in the following indications:
a.
ivonescimab combined with chemotherapy in patients with EGFR-mutated, locally 
advanced or metastatic non-squamous NSCLC who have progressed after treatment 
with a third-generation EGFR TKI ("HARMONi"); and
b.
ivonescimab combined with chemotherapy in first-line metastatic squamous NSCLC 
patients ("HARMONi-3").
The approval by the NMPA approval does not affect our ongoing development of 
the HARMONi and HARMONi-3 trials, nor does it change the timing or 
requirements of the trial process, or likelihood of approval, for ivonescimab 
in the United States, or Summit's other license territories.

Item 9.01   Financial Statements and Exhibits.  

(d) Exhibits

Exhibit Number   Description                                                                  
104              Cover Page Interactive Data File (embedded within the Inline XBRL document)  

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                                   SIGNATURE                                    
Pursuant to the requirements of the Securities Exchange Act of 1934, the 
registrant has duly caused this report to be signed on its behalf by the 
undersigned, hereunto duly authorized.

                     SUMMIT THERAPEUTICS INC.                                   
                                                                                
                                                                                
Date: May 24, 2024   By:   /s/ Manmeet S. Soni                                  
                           Chief Operating Officer and Chief Financial Officer  
                           (Principal Financial Officer)                        

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