Exhibit 1

 

This undersigned hereby agree, pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended (the “Act”), that a statement of beneficial ownership as required under Sections 13(g) or 13(d) of the Act and the Rules promulgated thereunder may be filed on each of their behalf on Schedule 13G or Schedule 13D, as appropriate, and that said joint filing may thereafter be amended by further joint filings.

 

FCPR Ventech A  
   
By: /s/ Jean Bourcereau  
Jean Bourcereau, Director  
   
FCPR Ventech B  
   
By: /s/ Jean Bourcereau  
Jean Bourcereau, Director  
   
FCPR Ventech Coinvest  
   
By: /s/ Jean Bourcereau  
Jean Bourcereau, Director  
   
FCPR Ventech Capital II  
   
By: /s/ Jean Bourcereau  
Jean Bourcereau, Director  
   
/s/ Alain Caffi  
Alain Caffi  
   
/s/ Jean Bourcereau  
Jean Bourcereau