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Property and Equipment, net (Tables)
12 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment, Net

Property and equipment, net consists of the following:

  

          
   Estimated Useful Life  September 30, 
   (years)  2025   2024 
            
Equipment and furniture  5 - 7  $400   $948 
Laboratory equipment  5   681    687 
Leasehold improvements  Shorter of estimated useful life or remaining lease term   41    891 
Property and equipment, gross      1,122    2,526 
Less: Accumulated depreciation      (794)   (1,349)
Property and equipment, net     $328   $1,177