PMID- 10211412 OWN - NLM STAT- MEDLINE DCOM- 19990609 LR - 20191103 IS - 1350-6129 (Print) IS - 1350-6129 (Linking) VI - 6 IP - 1 DP - 1999 Mar TI - A new amyloidogenic transthyretin variant (Val122Ala) found in a compound heterozygous patient. PG - 54-8 AB - A new TTR variant, Val122Ala, was characterized in an individual who carried the Gly6Ser polymorphism on the opposite allele. The main clinical feature of this familial transthyretin amyloidosis (ATTR) variant is extensive cardiomyopathy. The detection and characterization of the variant were performed using a combination of isoelectric focusing (IEF), restriction fragment length polymorphism (RFLP), immunoprecipitation, electrospray ionization mass spectrometry (ESIMS), HPLC (high performance liquid chromatography)/ESIMS, and matrix-assisted laser desorption/ionization mass spectrometry (MALDIMS). The results were confirmed by DNA analysis. The propositus has a brother who carries the new variant but not the polymorphism. FAU - Theberge, R AU - Theberge R AD - Mass Spectrometry Resource, Boston University School of Medicine, MA 02118, USA. FAU - Connors, L AU - Connors L FAU - Skare, J AU - Skare J FAU - Skinner, M AU - Skinner M FAU - Falk, R H AU - Falk RH FAU - Costello, C E AU - Costello CE LA - eng GR - P41-RR10888/RR/NCRR NIH HHS/United States GR - S10-RR10493/RR/NCRR NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - England TA - Amyloid JT - Amyloid : the international journal of experimental and clinical investigation : the official journal of the International Society of Amyloidosis JID - 9433802 RN - 0 (Amyloid) RN - 0 (Prealbumin) RN - HG18B9YRS7 (Valine) RN - OF5P57N2ZX (Alanine) SB - IM EIN - Amyloid 1999 Sep;6(3):214 MH - Alanine/*genetics MH - Amyloid/*biosynthesis MH - Amyloidosis/genetics/physiopathology MH - Female MH - *Heterozygote MH - Humans MH - Isoelectric Focusing MH - Male MH - Mass Spectrometry MH - Middle Aged MH - Pedigree MH - Polymorphism, Restriction Fragment Length MH - Prealbumin/chemistry/*genetics MH - Valine/*genetics EDAT- 1999/04/22 00:00 MHDA- 1999/04/22 00:01 CRDT- 1999/04/22 00:00 PHST- 1999/04/22 00:00 [pubmed] PHST- 1999/04/22 00:01 [medline] PHST- 1999/04/22 00:00 [entrez] AID - 10.3109/13506129908993288 [doi] PST - ppublish SO - Amyloid. 1999 Mar;6(1):54-8. doi: 10.3109/13506129908993288.