Thyroid dysfunction caused by second-generation tyrosine kinase inhibitors in Philadelphia chromosome-positive chronic myeloid leukemia.
Thyroid
; 20(11): 1209-14, 2010 Nov.
Article
in En
| MEDLINE
| ID: mdl-20929406
ABSTRACT
BACKGROUND:
Thyroid dysfunction is a well-known adverse effect of first-generation tyrosine kinase inhibitors (TKIs), like sunitinib. The aim of this study was to investigate the effect of second-generation TKIs on thyroid function.METHODS:
We retrospectively assessed the effect of the first-generation TKI imatinib and the second-generation TKI nilotinib and dasatinib on thyroid function tests in 73 Philadelphia chromosome-positive (Ph-positive) chronic myeloid leukemia patients.RESULTS:
Overall, 33 of 73 (45%) had one or more thyroid function test abnormalities during follow-up. Hypothyroidism or hyperthyroidism were found in 18 of 73 (25%) and 21 of 73 (29%) cases after a median of 6 and 22 weeks, respectively. In most patients (29 of 39, 74%) thyroid dysfunction was transient without clinical symptoms. Therapy of hypo-/hyperthyroidism was required in three patients. Thyroid dysfunction never resulted in the discontinuation of TKI therapy. Under treatment with imatinib, nilotinib, and dasatinib, thyroid abnormalities were detected in 25%, 55%, and 70%, respectively. Four of 55 patients (7%) treated with nilotinib had evidence for an autoimmune thyroiditis (antibody positive in 3 of 4 patients) with an episode of hyperthyroidism preceding hypothyroidism.CONCLUSIONS:
Thyroid dysfunction is a common adverse event with second-generation TKI therapy in patients with Ph-positive chronic myeloid leukemia. Although the mechanism is still unclear, the high frequency of thyroid abnormalities, including autoimmune thyroiditis, warrants regular and long-term monitoring of thyroid function in these patients.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Piperazines
/
Pyrimidines
/
Thiazoles
/
Thyroid Diseases
/
Thyroid Gland
/
Philadelphia Chromosome
/
Leukemia, Myelogenous, Chronic, BCR-ABL Positive
/
Protein Kinase Inhibitors
/
Antineoplastic Agents
Type of study:
Diagnostic_studies
/
Observational_studies
Limits:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
Thyroid
Journal subject:
ENDOCRINOLOGIA
Year:
2010
Document type:
Article
Affiliation country:
Germany