DARIDON ET AL: "BAFF, APRIL, TWE-PRIL: Who's who?" AUTOIMMUNITY REVIEWS, ELSEVIER, AMSTERDAM, NL, vol. 7, no. 4, 1 February 2008 (2008-02-01), pages 267-271, XP022493634 ISSN: 1568-9972 (B1)

MALIN V JONSSON ET AL: "Association Between Circulating Levels of the Novel TNF Family Members APRIL and BAFF and Lymphoid Organization in Primary Sjögren's Syndrome" JOURNAL OF CLINICAL IMMUNOLOGY, KLUWER ACADEMIC PUBLISHERS-PLENUM PUBLISHERS, NE, vol. 25, no. 3, 1 May 2005 (2005-05-01), pages 189-201, XP019281082 ISSN: 1573-2592 (B1)

ZHANG J ET AL: "Cutting edge: a role for B lymphocyte stimulator in systemic lupus erythematosus", THE JOURNAL OF IMMUNOLOGY, THE AMERICAN ASSOCIATION OF IMMUNOLOGISTS, US, vol. 166, 1 January 2001 (2001-01-01), pages 6-10, XP002960695, ISSN: 0022-1767 (B1)

SEYLER THORSTEN M ET AL: "BLyS and APRIL in rheumatoid arthritis" JOURNAL OF CLINICAL INVESTIGATION, vol. 115, no. 11, November 2005 (2005-11), pages 3083-3092, XP002534944 ISSN: 0021-9738 (B1)

WO-A-2007/030803 (B1)

ROSCHKE V ET AL: "Blys and APRIL form biologically active heterotrimers that are expressed in patients with systemic immune-based rheumatic diseases" JOURNAL OF IMMUNOLOGY, AMERICAN ASSOCIATION OF IMMUNOLOGISTS, US, vol. 169, 1 January 2002 (2002-01-01), pages 4314-4321, XP002351434 ISSN: 0022-1767 cited in the application (B1)