Cytogenetics can inform risk stratification in pediatric acute myeloid leukemia (AML). We describe the first case of a newborn with leukemia cutis found to have AML harboring a cryptic insertional t(8;16)(p11.2;p13.3) with associated KAT6A/CREBBP fusion identified exclusively by fluorescence in situ hybridization (FISH). Expectant management resulted in spontaneous leukemia resolution. The identification of t(8;16)(p11.2;p13.3) may serve as a biomarker for spontaneous remission in congenital AML. FISH for this translocation is warranted in congenital AML with a normal karyotype, and patients with KAT6A/CREBBP fusion should be conservatively managed. While 50% of spontaneously remitting congenital AML with t(8;16)(p11.2;p13.3) may recur, high salvage rates are attained with standard therapy.

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