Syndrome complex of bone marrow failure and pulmonary fibrosis predicts germline defects in telomerase

Erin M. Parry, Jonathan K. Alder, Xiaodong Qi, Julian Chen, Mary Armanios

Research output: Contribution to journalArticle

91 Citations (Scopus)

Abstract

Mutations in the essential telomerase components hTERT and hTR cause dyskeratosis congenita, a bone marrow failure syndrome characterized by mucocutaneous features. Some (∼ 3%) sporadic aplastic anemia (AA) and idiopathic pulmonary fibrosis cases also carry mutations in hTERT and hTR. Even though it can affect clinical outcome, because the mutation frequency is rare, genetic testing is not standard.We examined whether the cooccurrence of bone marrow failure and pulmonary fibrosis in the same individual or family enriches for the presence of a telomerase mutation. Ten consecutive individuals with a total of 36 family members who fulfilled these criteria carried a germline mutant telomerase gene (100%). The mean age of onset for individuals withAAwas significantly younger than that for those with pulmonary fibrosis (14 vs 51; P < .0001). Families displayed autosomal dominant inheritance and there was an evolving pattern of genetic anticipation, with the older generation primarily affected by pulmonary fibrosis and successive generations by bone marrow failure. The cooccurrence of AA and pulmonary fibrosis in a single patient or family is highly predictive for the presence of a germline telomerase defect. This diagnosis affects the choice of bone marrow transplantation preparative regimen and can prevent morbidity.

Original languageEnglish (US)
Pages (from-to)5607-5611
Number of pages5
JournalBlood
Volume117
Issue number21
DOIs
StatePublished - May 26 2011

Fingerprint

Primary Myelofibrosis
Pulmonary Fibrosis
Telomerase
Bone
Defects
Aplastic Anemia
Mutation
Genetic Anticipation
Dyskeratosis Congenita
Idiopathic Pulmonary Fibrosis
Genetic Testing
Mutation Rate
Bone Marrow Transplantation
Age of Onset
Genes
Bone Marrow
Morbidity
Testing

ASJC Scopus subject areas

  • Hematology
  • Biochemistry
  • Cell Biology
  • Immunology

Cite this

Syndrome complex of bone marrow failure and pulmonary fibrosis predicts germline defects in telomerase. / Parry, Erin M.; Alder, Jonathan K.; Qi, Xiaodong; Chen, Julian; Armanios, Mary.

In: Blood, Vol. 117, No. 21, 26.05.2011, p. 5607-5611.

Research output: Contribution to journalArticle

Parry, Erin M. ; Alder, Jonathan K. ; Qi, Xiaodong ; Chen, Julian ; Armanios, Mary. / Syndrome complex of bone marrow failure and pulmonary fibrosis predicts germline defects in telomerase. In: Blood. 2011 ; Vol. 117, No. 21. pp. 5607-5611.
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