PMID- 29326807 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200930 IS - 2035-3006 (Print) IS - 2035-3006 (Electronic) IS - 2035-3006 (Linking) VI - 10 IP - 1 DP - 2018 TI - Heavy-Chain Diseases and Myeloma-Associated Fanconi Syndrome: an Update. PG - e2018011 LID - 10.4084/MJHID.2018.011 [doi] LID - e2018011 AB - The heavy chain diseases (HCDs) are rare B-cell malignancies characterized by the production of a monoclonal immunoglobulin heavy chain without an associated light chain. There are three types of HCD, defined by the class of immunoglobulin heavy chain produced: IgA (alpha-HCD), IgG (gamma-HCD), and IgM (mu-HCD). Alpha-HCD is the most common and usually occurs as intestinal malabsorption in a young adult from a country of the Mediterranean area. Gamma- and mu-HCDs are rarer and associated with a B-cell non-Hodgkin lymphoma that produces an abnormal Ig heavy chain. These patients may occasionally be diagnosed with a monoclonal gammopathy of undetermined significance (MGUS). Fanconi syndrome, on the other hand, can be primary (inherited) or secondary (acquired). The only exception to this rule is the idiopathic form. Adult acquired Fanconi syndrome can be a rare complication of a monoclonal gammopathy. At diagnosis, most patients have an MGUS or smoldering multiple myeloma, with renal failure and evidence of osteomalacia. During follow-up, patients can develop an end-stage renal disease. Chemotherapy provides little benefit on renal function. FAU - Ria, Roberto AU - Ria R AD - Department of Biomedical Sciences and Human Oncology, Section of Internal Medicine, University of Bari "Aldo Moro" Medical School, Bari, Italy. FAU - Dammacco, Franco AU - Dammacco F AD - Department of Biomedical Sciences and Human Oncology, Section of Internal Medicine, University of Bari "Aldo Moro" Medical School, Bari, Italy. FAU - Vacca, Angelo AU - Vacca A AD - Department of Biomedical Sciences and Human Oncology, Section of Internal Medicine, University of Bari "Aldo Moro" Medical School, Bari, Italy. LA - eng PT - Journal Article PT - Review DEP - 20180101 PL - Italy TA - Mediterr J Hematol Infect Dis JT - Mediterranean journal of hematology and infectious diseases JID - 101530512 PMC - PMC5760076 OTO - NOTNLM OT - B-cell malignancies OT - Fanconi syndrome OT - Heavy chain disease OT - Monoclonal gammopathy OT - Multiple myeloma COIS- Competing interests: The authors have declared that no competing interests exist. EDAT- 2018/01/13 06:00 MHDA- 2018/01/13 06:01 PMCR- 2018/01/01 CRDT- 2018/01/13 06:00 PHST- 2017/10/05 00:00 [received] PHST- 2017/12/23 00:00 [accepted] PHST- 2018/01/13 06:00 [entrez] PHST- 2018/01/13 06:00 [pubmed] PHST- 2018/01/13 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - mjhid-10-1-e2018011 [pii] AID - 10.4084/MJHID.2018.011 [doi] PST - epublish SO - Mediterr J Hematol Infect Dis. 2018 Jan 1;10(1):e2018011. doi: 10.4084/MJHID.2018.011. eCollection 2018.