# Federal Register #2026-22810

APHIS Public Comment Notice on COR121 Maize Petition

**Buyer:** Animal and Plant Health Inspection Service, U.S. Department of Agriculture
**Posted:** November 09, 2026
**Respond By:** January 08, 2027
**Identifier:** 2026-22810

USDA APHIS is seeking public comment on a regulatory petition concerning genetically engineered COR121 maize.
- **Government agency:** U.S. Department of Agriculture (USDA), Animal and Plant Health Inspection Service (APHIS); the notice concerns the agency’s review of a petition and draft risk assessment.
- **Named company:** Pioneer Hi-Bred International, Inc., the petitioner for COR121 maize.
- **Subject of review:** COR121 maize expresses IPD083Cb for protection against certain susceptible lepidopteran pests and phosphomannose isomerase as a selectable marker.
- **Assessment:** APHIS’s draft plant pest risk assessment concludes COR121 maize is unlikely to pose an increased plant pest risk compared with unmodified corn.
- **Procurement status:** This is a regulatory notice inviting public comment, not a solicitation or purchase; no products, services, quantities, or contract value are specified.

### Description

APHIS received a petition from Pioneer Hi-Bred International, Inc. seeking a determination of nonregulated status for genetically engineered COR-ØØ121-4 maize. The maize expresses the IPD083Cb protein for protection against certain susceptible lepidopteran pests and phosphomannose isomerase as a selectable marker. APHIS made the petition and draft plant pest risk assessment available for public review and comment. Comments are due on or before January 8, 2027.

[View original listing](https://www.federalregister.gov/documents/2026/11/09/2026-22810/pioneer-hi-bred-international-inc-availability-of-a-petition-for-a-determination-of-nonregulated)