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Rare cases of PAMI syndrome in both father and son with the same missense mutation in PSTPIP1 gene and literature review

PSTPIP1‐associated myeloid‐related proteinaemia inflammatory (PAMI) syndrome has been described as a rare and distinct clinical phenotype of PSTPIP1‐associated inflammatory diseases. We report PSTPIP1 mutation in both father and son who have leukopenia and acne‐like lesions. Through whole‐exome sequencing on blood DNA, it is found a heterozygous mutation of PSTPIP1 gene c.748G>A on the father and son. The diagnosis of PAMI is made based on DNA sequencing results and clinical characteristics of typical lesions, leukopenia, and the markedly increased serum S100A8/A9 (calprotectin).