FH and fumaric aciduria: Additionally, six patients had FH P/LP variants (p.Gln376Pro (n = 3), p.His402Tyr (n = 2), p.Gly397Arg (n = 1)) that have been reported in homozygous and compound heterozygous patients with fumarate hydratase deficiency, but have not, to our knowledge, been reported in patients with HLRCC.