Pulmonary Fibrosis and/or Bone Marrow Failure Syndrome, Telomere-Related, 4, is also known as pulmonary fibrosis and/or bone marrow failure, telomere-related, 4. An important gene associated with Pulmonary Fibrosis and/or Bone Marrow Failure Syndrome, Telomere-Related, 4 is PARN (Poly(A)-Specific Ribonuclease). Affiliated tissues include bone marrow and bone, and related phenotypes are premature graying of hair and decreased dlco