Exudative AMD patients with the compliment factor H (CFH Y402H) high risk genotype (CC) received approximately one more Lucentis injection over a 9 month follow-up period than persons who do not have the high risk genotype. Genetic studies have made advancements in establishing the molecular cause of AMD. Two genes that seem to greatly...

A new study finds that weekly fish consumption decreases the risk of late age-related macular degeneration (AMD) in persons with the high-risk complement factor H (CFH) genotype but not in persons with the low risk CFH genotypes. Complement factor H is an important regulator of the complement system. CFH specifically inhibits the alternative...

The retinal pigment epithelium (RPE) is responsible for digesting the waste products of the photoreceptors. The digestion process is very efficient, but a tiny fraction of the waste is chemically indigestible, and will accumulate within the RPE. A hallmark of aging is the accumulation of undigested waste products in the form of lipofuscin within...

A study finds that persons homozygous for the compliment factor H high-risk allele have a smaller treatment response to the AREDS vitamin/mineral supplement than persons homozygous for the low-risk allele. A retrospective analysis was undertaken of 876 white participants in the Age-Related Eye Disease Study (AREDS) study with categories 3 and 4...

A new study finds a relationship between serum cystatin C level (a measure of kidney function) and chronic kidney disease (defined by glomerular filtration rate) with the incidence of AMD. The finding of a relationship of complement factor H Y402H (1277T->C) genotype status to both age-related macular degeneration (AMD) and kidney disease has...

Two papers investigating the association of the compliment component 2 (C2) and compliment factor B (CFB) genes with age-related macular degeneration (AMD) appear in the February 2009 edition of the journal Investigative Ophthalmology and Vision Science. In the first paper, researchers in Austrailia investigated 7 varients (known as SNPs) of...

A large genetic study in Germany finds that the compliment Factor H (CFH) gene was involved with the onset of AMD, and that both the CFH gene and the age-related maculopathy susceptibility (ARMS2) gene are involved with its progression. The researchers analysed variants (known as SNPs) in the genes for complement factor H (CFH), age-related...

Multifocal choroiditis (MFC) is strongly associated with the same complement factor H risk alleles as age-related macular degeneration (AMD), according to a new research study. AMD is a multifactorial disease with several established risk factors, including genetic and environmental components. Genetic predisposing factors, cellular oxidative...

Ophthotech has recently announced the initiation of two phase 1 clinical trials for new drugs designed to treat age-related macular degeration (AMD). One drug is an anti-C5 complement factor aptamer known as ARC1905. The second drug is a monoclonal antibody targeting α5β1 integrin called Volociximab, and it's antiangiogenic properties are being...

A study of Taiwan Chinese with early AMD found that the presence of the Y402H polymorphism in complement factor H is significantly associated with increased susceptibility to early AMD. Efforts have been made to identify susceptibility genes for AMD. Recent reports have shown that a common polymorphism Y402H in the complement factor H (CFH)...