Development and results of the Spanish registry of patients with alpha-1-antitrypsin deficiency

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Authors: Beatriz Lara, Cristian de la Roza, Sara Vilà, Rafael Vidal, Marc Miravitlles

Published Date October 2007 Volume 2007:2(3) Pages 393 - 398

DOI: http://dx.doi.org/10.2147/COPD.S

Beatriz Lara¹, Cristian de la Roza¹, Sara Vilà¹, Rafael Vidal², Marc Miravitlles^1,3

¹Department of Pneumology, Clinical Institute of the Thorax (IDIBAPS), Hospital Clinic, Barcelona, Spain; ²Department of Pneumology, Hospital General Vall d’Hebron, Barcelona, Spain; ³Alpha-1 International Registry (A.I.R)

Abstract: The Spanish registry of alpha-1 antitrypsin deficiency was founded in 1993 and became a member of the International Registry (AIR) in 1999. We describe the updating process following its incorporation into AIR and compare the data collected in the first period (1993–1999) and the second period (1999–2005), during which time patients were included exclusively by internet. The registry included 301 patients during period 1, 69% males and 46% had a history of smoking. Their mean age was 46 years (SD = 13) and 284 (94%) had the ZZ phenotype, 49% received augmentation therapy. During period 2, 161 new cases were included, 63% of whom were males with a mean age of 44 years (SD = 16). A total of 126 (78%) had the ZZ phenotype. Only 12% received augmentation therapy. A total of 462 different patients were included in both periods. Significant differences were observed in the number of cases with the SZ phenotype and the severity of FEV₁ impairment between the two periods. Implementation of an internet-based collection of data did not result in a lower rate of reporting to the registry. However, data from a significant number of patient included in period 1 could not be actualized in the new data base.

Keywords: alpha-1 antitrypsin deficiency, registries, epidemiology, COPD, emphysema