# Request for Letters of Interest (LOI) for NCI-ComboMATCH Laboratories; Extension of Submission Period
**AGENCY:**
National Institutes of Health, HHS.
**ACTION:**
Notice; extension of submission period.
**SUMMARY:**
The Department of Health and Human Services, National Institutes of Health (NIH) published a Notice in the *Federal Register* on August 14, 2023. This document extends the date to submit Letters of Interest (LOIs) to the National Cancer Institute (NCI), NIH.
**DATES:**
The deadline to submit LOIs for NCI-ComboMATCH Laboratories, which published at 88 FR 55055 on August 14, 2023, is extended. LOIs should be submitted before 5 p.m. EST on October 31, 2023.
**FOR FURTHER INFORMATION CONTACT:**
Questions about this request for LOIs should be directed to *[email protected]* or Benjamin Kim at *[email protected]* or by phone at (240) 276-5961.
**SUPPLEMENTARY INFORMATION:**
On August 14, 2023, NIH published a notice in the *Federal Register* , FR Doc. 2023-17352, on pages 55055-55057. This notice extends the submission date for LOIs from September 30, 2023, to October 31, 2023.
Lyndsay N. Harris,
Associate Director, Cancer Diagnosis Program, Division of Cancer Treatment & Diagnosis, National Cancer Institute.