Exhibit 32.2
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Quarterly Report of Cabaletta Bio, Inc. (the “Company”) on Form 10-Q for the fiscal quarter ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:
| Date: November 14, 2024 | 
 | By: | /s/ Anup Marda | 
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 | Anup Marda | 
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 | Chief Financial Officer | 
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 | (Principal Financial and Accounting Officer) |