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  • G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
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  • C12Q2600/00—Oligonucleotides characterized by their use
  • C12Q2600/156—Polymorphic or mutational markers

Definitions

• Macular degeneration is a serious medical condition, in which intraretinal fluid builds up and can damage the retina, resulting in loss of vision in the center of the visual field. Macular degeneration can be age-related. "Dry” (nonexudative") and “wet"
• VEGF vascular endothelial growth factor
• EYLEA® aflibercept
• Lucentis ⁇ aflibercept
• Lucentis ⁇ aflibercept
• VEGF inhibitors VEGF
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• Methods of associating a genetic variant with intraretinal fluid comprising: statistically associating (a) one or more genetic variants in a population of neovascular age-related macular degeneration subjects with (b) intraretinal fluid in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with a lower level of intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti- VEGF agent and who have one or two copies of the genetic variant allele, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent and who do not have a copy of the genetic variant allele.
• FIG 1. Shows an overview of a statistical study used to identify genetic variants associated with anti-VEGF drug response as measured by visual acuity, anatomic outcomes and treatment frequency in the VIEW 1 study.
• FIG. 2 shows baseline characteristics and clinical demographics of a PGx
• Substudy including gender, age, race, visual acuity and lesion type that were reflective of distributions observed in the VIEW 1 full analysis set.
• FIG. 3 shows quality control measures applied to SNPs on chip to generate a final sample set for the VIEW 1 study in 154 sites in the U.S. and Canada (-96% Caucasian randomized).
• FIG. 4 shows quality control measures applied to SNPs on chip to generate a final sample set for the VIEW 1 study.
• FIG. 5 shows an anatomical response, namely the X-chromosome SNP (rs2056688), which revealed the highest association with anatomical outcome, demonstrating an odds ratio (OR) of 0.2578 and a point-wise association (p-value 7.27 x 10-7) with presence of intraretinal fluid at week 52.
• FIG. 6 shows the rs2056688 SNP was located in a non-coding region, with the closest relevant functional gene (Protein Kinase X-Linked (PRK-X)) mapping ⁇ 400kb upstream of the putative variant.
• PRK-X Protein Kinase X-Linked
• FIG. 7 shows additional neighboring SNPs showed a dose effect.
• FIG. 8 shows the SNPs identified in the study of Example 1.
• the word “comprise” and variations of the word, such as “comprising” and “comprises,” means “including but not limited to,” and is not intended to exclude, for example, other additives, components, integers or steps.
• each step comprises what is listed (unless that step includes a limiting term such as “consisting of), meaning that each step is not intended to exclude, for example, other additives, components, integers or steps that are not listed in the step.
• Ranges can be expressed herein as from “about” one particular value, and/or to "about” another particular value. When such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent "about,” it will be understood that the particular value forms another embodiment. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint. It is also understood that there are a number of values described herein, and that each value is also herein disclosed as “about” that particular value in addition to the value itself. For example, if the value “10” is disclosed, then “about 10" is also disclosed.
• a subject means an individual.
• a subject is a mammal such as a human.
• a subject can be a non-human primate.
• Non- human primates include marmosets, monkeys, chimpanzees, gorillas, orangutans, and gibbons, to name a few.
• subject also includes domesticated animals, such as cats, dogs, etc., livestock (for example, cattle (cows), horses, pigs, sheep, goats, etc.), laboratory animals (for example, ferret, chinchilla, mouse, rabbit, rat, gerbil, guinea pig, etc.) and avian species (for example, chickens, turkeys, ducks, pheasants, pigeons, doves, parrots, cockatoos, geese, etc.).
• Subjects can also include, but are not limited to fish (for example, zebrafish, goldfish, tilapia, salmon, and trout), amphibians and reptiles.
• a "subject” is the same as a "patient,” and the terms can be used interchangeably.
• polymorphism refers to the occurrence of one or more genetically determined alternative sequences or alleles in a population.
• a "polymorphic site” is the locus at which sequence divergence occurs. Polymorphic sites have at least one allele.
• a diallelic polymorphism has two alleles.
• a triallelic polymorphism has three alleles. Diploid organisms may be homozygous or heterozygous for allelic forms.
• a polymorphic site can be as small as one base pair.
• polymorphic sites include: restriction fragment length polymorphisms (RFLPs), variable number of tandem repeats (VNTRs), hypervariable regions, minisatellites, dinucleotide repeats, trinucleotide repeats, tetranucleotide repeats, and simple sequence repeats.
• RFLPs restriction fragment length polymorphisms
• VNTRs variable number of tandem repeats
• minisatellites dinucleotide repeats
• trinucleotide repeats trinucleotide repeats
• tetranucleotide repeats tetranucleotide repeats
• simple sequence repeats simple sequence repeats.
• a "single nucleotide polymorphism (SNP)" can occur at a polymorphic site occupied by a single nucleotide, which is the site of variation between allelic sequences. The site can be preceded by and followed by highly conserved sequences of the allele. A SNP can arise due to substitution of one nucleotide for another at the polymorphic site.
• a synonymous SNP refers to a substitution of one nucleotide for another in the coding region that does not change the amino acid sequence of the encoded polypeptide.
• a non-synonymous SNP refers to a substitution of one nucleotide for another in the coding region that changes the amino acid sequence of the encoded polypeptide.
• a SNP may also arise from a deletion or an insertion of a nucleotide or nucleotides relative to a reference allele.
• a "set" of polymorphisms means one or more polymorphism, e.g., at least 1, at least 2, at least 3, at least 4, at least 5, at least 6, or more than 6 polymorphisms.
• nucleic acid can be a polymeric form of nucleotides of any length, can be DNA or RNA, and can be single- or double-stranded. Nucleic acids can include promoters or other regulatory sequences.
• Oligonucleotides can be prepared by synthetic means.
• Nucleic acids include segments of DNA, or their complements spanning or flanking any one of the polymorphic sites.
• the segments can be between 5 and 100 contiguous bases and can range from a lower limit of 5, 10, 15, 20, or 25 nucleotides to an upper limit of 10, 15, 20, 25, 30, 50, or 100 nucleotides (where the upper limit is greater than the lower limit).
• Nucleic acids between 5-10, 5-20, 10- 20, 12-30, 15-30, 10-50, 20-50, or 20-100 bases are common.
• the polymorphic site can occur within any position of the segment.
• a reference to the sequence of one strand of a double-stranded nucleic acid defines the complementary sequence and except where otherwise clear from context, a reference to one strand of a nucleic acid also refers to its complement.
• Nucleotide refers to molecules that, when joined, make up the individual structural units of the nucleic acids RNA and DNA.
• a nucleotide is composed of a nucleobase (nitrogenous base), a five-carbon sugar (either ribose or 2-deoxyribose), and one phosphate group.
• Nucleic acids are polymeric macromolecules made from nucleotide monomers.
• the purine bases are adenine (A) and guanine (G), while the pyrimidines are thymine (T) and cytosine (C).
• RNA uses uracil (U) in place of thymine (T).
• the term "genetic variant” or “variant” refers to a nucleotide sequence in which the sequence differs from the sequence most prevalent in a population, for example by one nucleotide, in the case of the SNPs described herein. For example, some variations or substitutions in a nucleotide sequence alter a codon so that a different amino acid is encoded resulting in a genetic variant polypeptide. Other non-limiting examples of genetic variants include, insertions, deletions, indels, frameshift variants, stop codon variants, synonymous variants, non-synonymous variants and copy number variants (e.g., deletions and duplications).
• the term "genetic variant,” can also refer to a polypeptide in which the sequence differs from the sequence most prevalent in a population at a position that does not change the amino acid sequence of the encoded polypeptide (i.e., a conserved change).
• Genetic variant polypeptides can be encoded by a risk haplotype, encoded by a protective haplotype, or can be encoded by a neutral haplotype. Genetic variant polypeptides can be associated with risk, associated with protection, or can be neutral.
• isolated nucleic acid or “purified nucleic acid” is meant DNA that is free of the genes that, in the naturally-occurring genome of the organism from which the DNA of the invention is derived, flank the gene.
• the term therefore includes, for example, a recombinant DNA which is incorporated into a vector, such as an autonomously replicating plasmid or virus; or incorporated into the genomic DNA of a prokaryote or eukaryote (e.g., a transgene); or which exists as a separate molecule (for example, a cDNA or a genomic or cDNA fragment produced by PCR, restriction endonuclease digestion, or chemical or in vitro synthesis).
• isolated nucleic acid also refers to RNA, e.g., an mRNA molecule that is encoded by an isolated DNA molecule, or that is chemically synthesized, or that is separated or substantially free from at least some cellular components, for example, other types of RNA molecules or polypeptide molecules.
• treated refers to the medical management of a patient with the intent to cure, ameliorate, stabilize, or prevent a disease, pathological condition, or disorder.
• This term includes active treatment, that is, treatment directed specifically toward the improvement of a disease, pathological condition, or disorder, and also includes causal treatment, that is, treatment directed toward removal of the cause of the associated disease, pathological condition, or disorder.
• this term includes palliative treatment, that is, treatment designed for the relief of symptoms rather than the curing of the disease, pathological condition, or disorder; preventative treatment, that is, treatment directed to minimizing or partially or completely inhibiting the development of the associated disease, pathological condition, or disorder; and supportive treatment, that is, treatment employed to supplement another specific therapy directed toward the improvement of the associated disease, pathological condition, or disorder.
• the term covers any treatment of a subject, including a mammal (e.g., a human), and includes: (i) preventing the disease from occurring in a subject that can be predisposed to the disease but has not yet been diagnosed as having it; (ii) inhibiting the disease, i.e., arresting its development; or (iii) relieving the disease, i.e., causing regression of the disease.
• a mammal e.g., a human
• administering refers to any method of providing a pharmaceutical preparation to a subject. Such methods are well known to those skilled in the art and include, but are not limited to, oral administration, sublingual administration, trans-buccal mucosa administration, transdermal administration, administration by inhalation, nasal administration, topical administration, intravaginal administration, ophthalmic administration, intraaural administration, intracerebral administration, intrathecal administration, rectal administration, intraperitoneal
• a preparation can be administered therapeutically; that is, administered to treat an existing disease or condition.
• a preparation can be administered prophylactically; that is, administered for prevention of a disease or condition.
• sequence similarity or sequence identity between sequences are performed as follows. To determine the percent identity of two amino acid sequences, or of two nucleic acid sequences, the sequences are aligned for optimal comparison purposes (e.g., gaps can be introduced in one or both of a first and a second amino acid or nucleic acid sequence for optimal alignment and non-homologous sequences can be disregarded for comparison purposes).
• the length of a reference sequence aligned for comparison purposes is at least 30%, preferably at least 40%, more preferably at least 50%, 60%, and even more preferably at least 70%, 80%, 90%, 100% of the length of the reference sequence.
• amino acid residues or nucleotides at corresponding amino acid positions or nucleotide positions are then compared. When a position in the first sequence is occupied by the same amino acid residue or nucleotide as the corresponding position in the second sequence, then the molecules are identical at that position.
• the percent identity between the two sequences is a function of the number of identical positions shared by the sequences, taking into account the number of gaps, and the length of each gap, which need to be introduced for optimal alignment of the two sequences.
• the comparison of sequences and determination of percent identity between two sequences can be accomplished using a mathematical algorithm.
• the percent identity between two amino acid sequences is determined using the Needleman and Wunsch, (1970, J. Mol. Biol. 48: 444-453) algorithm which has been incorporated into the GAP program in the GCG software package, using either a Blossum 62 matrix or a PAM250 matrix, and a gap weight of 16, 14, 12, 10, 8, 6, or 4 and a length weight of 1, 2, 3, 4, 5, or 6.
• the percent identity between two nucleotide sequences is determined using the GAP program in the GCG software package, using a NWSgapdna.
• a particularly preferred set of parameters are a Blossum 62 scoring matrix with a gap penalty of 12, a gap extend penalty of 4, and a frameshift gap penalty of 5.
• the percent identity between two amino acid or nucleotide sequences can be determined using the algorithm of E. Meyers and W. Miller (1989, Cabios, 4: 11-17) which has been incorporated into the ALIGN program (version 2.0), using a PAM120 weight residue table, a gap length penalty of 12 and a gap penalty of 4.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• anti-VEGF agent or intravitreal anti-VEGF agent include, but is not limited to, bevacizumab, ranibizumab, ramucirumab, aflibercept, sunitinib, sorafenib, vandetanib, vatalanib, tivozanib, axitinib, imatinib or pazopanib
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent for one year with (ii) an anatomical outcome in the same population of neovascular age- related macular degeneration subjects, wherein one or more genetic variants is associated with the presence of intraretinal cystoid edema (fluid) in subjects who have one or two copies of the genetic variant allele, compared to the level of intraretinal cystoid edema (fluid) in subjects who do not have a copy of the genetic variant allele.
• the anatomic outcome is a Gain of 15 letters (visual acuity
• the statistical associations described herein can include logistic regression analyses, QC of the genetic data including Hardy -Weinberg Equilibrium (HWE) tests, identity by state (IBS) estimates and/or gender confirmation.
• the population structure can be assessed using principal component analysis (PCA).
• PCA principal component analysis
• the statistical associations can include logistic regression with baseline values and any potential population structure variables as covariates in the model.
• the anatomical outcome is the presence of intraretinal cystoid edema, a gain in vision/improved visual acuity, or a decrease in intraretinal fluid.
• Additional anatomical outcomes include, but are not limited to, a reduction in central retinal thickness as measured by optical coherence tomography (OCT), complete resolution of both intraretinal and subretinal fluid, reduction in choroidal neovascular (CNV) area, reduction in total neovascular lesion size as measured by fluorescence angiography, and reduction in subretinal hyperreflectivity (SHM) material as measured by OCT.
• OCT optical coherence tomography
• CNV choroidal neovascular
• SHM subretinal hyperreflectivity
• the statistical association can be measured as a p-value.
• p-values For example different types of p-values can be obtained: simple t-test p-values for the original data and log-transformed data both assuming equal variances, and chebby checker p-values. These p-values can be presented on an individual basis as well as by taking multiple comparisons into account. The mix-o-matic method can be applied to provide additional information about these p-values.
• the p-value of the association is less than or equal to 1 x 10 "5 , 1 x 10 "6 , 1 x 10 "7 , 1 x 10 "8 , etc.
• the p-value of the association is less than or equal to 1 x 10-5, i.e., suggestive statistical significant and 1 x 10 "8 i.e. experiment wise statistical significance.
• the effect size of a statistical association can be measured as an odds ratio.
• the effect size of a statistical association can be measured as the ratio of the odds of the presence of intraretinal cystoid edema (fluid) in neovascular age- related macular degeneration subjects treated with an intravitreal anti-VEGF agent and who have 1 or 2 copies of an allele, to the ratio of the odds of the presence of intraretinalcystoid edema (fluid) in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent and who do not have the copy of the allele.
• the odds ratio is less than or equal to 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 or 0.9. Having one copy of the allele would have a smaller influence than individuals who have two copies of the allele.
• the statistical association can be measured as the ratio of the odds of the Gain of 15 letters (visual acuity) in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent and who have 1 or 2 copies of an allele, to the ratio of the odds of the Gain of 15 letters in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent and who do not have the copy of the allele.
• the odds ratio is greater than or equal to 2.4, 2.5, 2.6, 2.7, 2.8 or 2.9.
• the statistical association can be measured as the ratio of the odds of neovascular age-related macular degeneration subjects who have a higher requirement for on-going aggressive treatment with an intravitreal anti-VEGF agent and who have 1 or 2 copies of an allele, to the odds of neovascular age-related macular degeneration subjects who have a lower requirement for on-going aggressive treatment with an intravitreal anti-VEGF agent and who do not have the copy of the allele.
• the odds ratio is less than or equal to 4.0, 3.9, 3.8, 3.7, 3.6, 3.5, 3.4, 3.3, or 3.2
• the methods can be used to associate a genetic variant with visual acuity, anatomic outcomes or treatment frequency.
• the genetic variant can be one or more single nucleotide polymorphisms.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a reduced level of presence of intraretinal cystoid edema (fluid), after one year of treatment.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with a decreased level of intraretinal fluid in subjects who have 1 or 2 copies of a genetic variant allele, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects administered an intravitreal anti-VEGF agent and who do not have a copy of the genetic variant allele.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cyctoid edema (fluid) after one year of treatment.
• a method of associating a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with a decreased intraretinal fluid, compared to the level of intraretinal fluid in neovascular age- related macular degeneration subjects not treated with an intravitreal anti-VEGF agent, wherein the genetic variant is a single nucleotide polymorphism is selected from the group consisting of rs2056688, rs5962084, rs5962087, rs5915722 and rs5962095.
• the genetic variant is a single nucleotide polymorphism selected from the group consisting of rs2056688, rs5962084, rs5962087, rs5915722, rs5962095, rs2106124, rsl 879796, rsl2148845, rsl2148100, rsl 7482885 and rsl 7629019.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• Disclosed herein are methods of associating a genetic variant with intraretinal fluid comprising: statistically associating (a) one or more genetic variants in a population of neovascular age-related macular degeneration subjects with (b) intraretinal fluid in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with reduced intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent, wherein reduced intraretinal fluid is improved visual acuity in in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• Disclosed herein are methods of associating a genetic variant with intraretinal fluid comprising: statistically associating (a) one or more genetic variants in a population of neovascular age-related macular degeneration subjects with (b) intraretinal fluid in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with reduced intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent, wherein the p-value of the association is less than or equal to 1 x 10-6.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• Disclosed herein are methods of associating a genetic variant with intraretinal fluid comprising: statistically associating (a) one or more genetic variants in a population of neovascular age-related macular degeneration subjects with (b) intraretinal fluid in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with reduced intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent, wherein the odds ratio of reduced intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent to reduced intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent is less than or equal to 0.5.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• Methods of associating a genetic variant with intraretinal fluid comprising: statistically associating (a) one or more genetic variants in a population of neovascular age-related macular degeneration subjects with (b) intraretinal fluid in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with reduced intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent, wherein the genetic variant is a single nucleotide polymorphism.
• a genetic variant with visual acuity, anatomic outcomes or treatment frequency comprising: (a) statistically associating (i) one or more genetic variants in a population of neovascular age-related macular degeneration subjects who have been administered an intravitreal anti-VEGF agent with (ii) an anatomical outcome in the same population of neovascular age-related macular degeneration subjects, wherein one or more genetic variants is associated with a the presence of intraretinal cystoid edema (fluid), compared to the absence of intraretinal cystoid edema (fluid) after one year of treatment.
• a genetic variant with intraretinal fluid comprising: statistically associating (a) one or more genetic variants in a population of neovascular age-related macular degeneration subjects with (b) intraretinal fluid in the same population of neovascular age-related macular degeneration subjects, wherein the one or more genetic variants is associated with reduced intraretinal fluid in neovascular age-related macular degeneration subjects treated with an intravitreal anti-VEGF agent, compared to the level of intraretinal fluid in neovascular age-related macular degeneration subjects not treated with an intravitreal anti-VEGF agent, wherein the genetic variant is a single nucleotide polymorphism, wherein the single nucleotide polymorphism is selected from the group consisting of rs2056688, rs5962084, rs5962087, rs5915722 and rs5962095.
• kits for utilizing the methods described herein can comprise an assay or assays for detecting one or more genetic variants in a sample of a subject.
• the purpose of this statistical study was to identify genetic variants associated with anti-VEGF drug response as measured by visual acuity, anatomic outcomes and treatment frequency in the VIEW 1 study.
• An overview of the VIEW 1 Study is represented in FIG. 1.
• the VIEW 1 study evaluated efficacy and safety of intravitreal aflibercept injection (IAI) compared with ranibizumab for treatment of neovascular AMD.
• IAI intravitreal aflibercept injection
• GWAS genome wide association study
• Logistic regression with baseline values was performed to establish the association between genetic variants and efficacy variables. GWAS analysis of approximately 1 million variants was performed. The association between genetic variants and efficacy variables were determined using logistic regression with baseline values. All treatment arms were combined. For each SNP, genotypes were coded according to an additive mode of inheritance. Variants associated with gaining >15 ETDRS letters at week 52, presence of intraretinal cystoid edema (fluid as measured by time domain optical coherence tomography (TD-OCT)) at week 52 and frequency of treatment at week 96 were evaluated. Variants were also associated with treatment burden. Specifically, patients requiring more than 7 injections from Week 52 to Week 96 [2nd Year of Study] were analyzed.
• TD-OCT time domain optical coherence tomography
• variants were associated with the presence of intra-retinal cystoid edema (Defined as Fluid) at Week 52.
• Patient demographics and baseline characteristics of VIEW 1 were also identified. (See FIG. 2).
• Quality control measures were applied to SNPs on chip to generate a final sample set. (See FIGS. 3 and 4).
• Anatomical response namely the X-chromosome SNP (rs2056688) revealed the highest association with anatomical outcome, demonstrating an odds ratio (OR) of 0.2578 and a point-wise association (p-value 7.27 x 10 "7 ) with presence of intraretinal fluid at week 52. (See FIG. 5).
• Four neighboring SNPs rs5962084, rs5962087, rs5915722, rs5962095
• revealed similar ORs 0.3151-0.3461
• point-wise associations 5.48 x 10 "6 - 8.59 x 10 "6 ).
• the rs2056688 SNP was located in a non-coding region, with the closest relevant functional gene (Protein Kinase X-Linked (PRK-X)) mapping ⁇ 400kb upstream of the putative variant. (See FIG. 6). Additional SNPs with lower significance were found in association with proportion of patients with >15 ETDRS letters gains in vision at week 52 and frequency of treatment at week 96.
• PRK-X Protein Kinase X-Linked
• FIG. 8 summarizes the SNPs identified in the study.
• a GWAS in neovascular AMD patients undergoing anti-VEGF treatment in the VIEW 1 trial identified a suggestive association between a genetic variant and the presence of intraretinal fluid at week 52 as measured by TD-OCT.
• the variant was located at a position on the X chromosome near the gene for PRK-X, a serine/threonine protein kinase involved in angiogenesis.

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