NEFROLOGÍA. Vol. XXIII. Suplemento 1. 2003 CONTENTS HEREDITARY RENAL DISEASES Guest Editors: R. Torra, J. Ballarín and P. Barceló INTRODUCTION · Genetics and renal hereditary diseases P. Barceló, J. Ballarín and R. Torra ORIGINALS · Molecular diagnosis of renal hereditary diseases E. Ars, R. Torra and A. Oliver · Ethics in renal genetics J.-P. Grünfeld · Autosomal dominant polycystic kidney disease V. E. Torres and P. C. Harris · Autosomal recessie polycystic kidney disease G. Ariceta Iraola and X. M. Lens Neo · The Alport syndrome B. Tazón, E. Ars and R. Torra · Familiar benign hematuria M. Praga, R. Torra and B. Tazón · Nefronoptisis and medullar cystic disease: genetic aspects V. Álvarez Martínez and E. Coto García · Cystinuria F. Rousaud, M. Palacín and V. Nunes · Cystinosis: from cystine crystals to the cystinosine G. Pintos Morell · Renal hereditary tubulopathies: from the clinic to the molecular biology J. Rodríguez Soriano · The Fabry's disease R. Torra Balcells and J. Ballarín · Molecular pathology of primary hyperoxaluria A. Santana, A. Torres and E. Salido