logistic analysis with 'distance to the known pathogenic variant' learned instead of position coordinates
MOVA_3d_distance_log.RdTest whether the three factors ('distance to the known pathogenic variant', ΔBLOSUM62, and pLDDT) can predict pathogenicity by performing logistic regression analysis. MOVA_predistance function must be performed before this function.
Usage
MOVA_3d_distance_log(protein_name, MOVA_final_predict_file, MOVA_predict_file, phenotype = "Target")Arguments
- protein_name
Name of target protein/gene. Used to name the file to be exported.
- MOVA_final_predict_file
The "gene name_Target or Pathogenic_finalpredict.csv" file output by the MOVA function. The final MOVA_3d_distance predicted values will be in this file.
- MOVA_predict_file
The "gene name_Target or Pathogenic_predict.csv" file output by the MOVA function.
- phenotype
Specify "Target" if you want the positive variant to be the Target variant only, or "Pathogenic" if you want to include the Pathogenic variant as well. The default is "Target".
Details
Draw ROC curve for MOVA_3d_distance_log (blue). MOVA_3d_distance_log is a logistic regression analysis with 'distance to the known pathogenic variant', ΔBLOSUM62,pLDDT as explanatory variables and the pathogenicity of the variant as objective variable. MOVA_3d_distance_log is evaluated using the Stratified 5-fold cross validation method, and the model is repeated five more times. The average of the predicted values is added to the "MOVA_3d_distance_log_predict" column of the MOVA_predict_file. The final MOVA_3d_distance_log predicted value are added to the "MOVA_3d_distance_log_predict" column in MOVA_final_predict_file. "protein/gene name_Target or Pathogenic_result_3d_distance_log.csv" contains the Cutoff value (Youden index) for each fold (Column: Cutoff), the number of positive variants for each gene used in the analysis (Column: positive_variant_num), number of negative variants (Column: negative_variant_num), AUC for each fold of MOVA_3d_distance_log (Column: AUC), cvAUC for MOVA_3d_distance_log (Column: cvauc). The file required for redrawing with the MOVA_redraw function of MOVA_3d_distance_log is output in "protein/gene name_Target or Pathogenic_predict_orig_3d_distance_log.csv".
Value
A data.frame containing the Cutoff value (Youden index) for each fold (Column: Cutoff), the number of positive variants for each gene used in the analysis (Column: positive_variant_num), number of negative variants (Column: negative_variant_num), AUC for each fold of MOVA_3d_distance_log (Column: AUC), cvAUC for MOVA_3d_distance_log (Column: cvauc). The same data is output to "protein/gene name_Target or Pathogenic_result_3d_distance_log.csv".
Examples
Hgmd_divide("./source/TARDBP.csv")
Edit_gnomAD_file("./source/gnomAD_v3.1.2_ENST00000240185_2023_02_14_13_23_48.csv", "./source/TARDBP_gnomAD.csv")
Edit_variant_data("../CADD_REVEL/AlphScore_final.tsv", "./source/TARDBP.csv", "./source/TARDBP_gnomAD.csv", "Q13148", "TARDBP", "./source/TARDBPvariantdata.csv")
Edit_polyphen_data("../dbNSFP/dbNSFP4.3a/dbNSFP4.3a_variant.chr1","./source/TARDBPvariantdata.csv", "TARDBP_alph.csv", "Q13148", 11012654, 11025492 ,"./source/TARDBPvariantdatapol.csv", "./source/TARDBP_alphpol.csv")
Edit_final_variant_file("./source/TARDBP_alphpol.csv","./source/TARDBP_alphpol2.csv")
MOVA("./source/Q13148.fa", "TARDBP", "./source/AF-Q13148-F1-model_v2.pdb","./source/TARDBP_alphpol2.csv", "./source/TARDBPvariantdatapol.csv")
MOVA_predistance("TARDBP", "TARDBP_Target_finalpredict.csv","TARDBP_Target_predict.csv")
MOVA_3d_distance_log("TARDBP", "TARDBP_Target_finalpredict.csv","TARDBP_Target_predict.csv")
## The function is currently defined as
function (protein_name, MOVA_final_predict_file, MOVA_predict_file,
phenotype = "Target")
{
D <- fread(MOVA_predict_file)
D$MOVA_3d_distance_log_predict <- 0
D[, c("MOVA_3d_distance_log_predict")] <- list(NULL)
if (phenotype == "Target") {
D <- D[(D$Type == "Target") | (D$Type == "Ctrl"), ]
}
fpredict <- data.frame(matrix(rep(NA, 3), nrow = 1))[numeric(0),
]
colnames(fpredict) <- c("change", "predict", "n")
imp.rfa <- data.frame(matrix(rep(NA, 3), nrow = 1))[numeric(0),
]
colnames(imp.rfa) <- c("name", "IncNodePurity", "n")
final_data <- fread(MOVA_final_predict_file)
final_data$MOVA_3d_distance_log_predict <- 0
final_data[, c("MOVA_3d_distance_log_predict")] <- list(NULL)
df <- data.frame(matrix(rep(NA, 6), nrow = 1))[numeric(0),
]
colnames(df) <- c("ID", "re_result", "distance", "change",
"iter1", "iter2")
D$id2 <- 0
D[, c("id2")] <- list(NULL)
if (phenotype == "Target") {
D$result <- D$Type2
}
else {
D$result <- D$Type3
}
oldw <- getOption("warn")
options(warn = -1)
D <- rowid_to_column(D, var = "id2")
for (i2 in 1:5) {
D$id3 <- D$id2
j <- 5
dat1 <- D %>% stratified(., group = "result", size = 1/j)
dat1$iter <- 1
datzan <- D[-dat1$id2, ]
for (i in 2:j) {
datzan[, c("id2")] <- list(NULL)
datzan <- rowid_to_column(datzan, var = "id2")
if (i != j) {
dat2 <- datzan %>% stratified(., group = "result",
size = 1/(j - i + 1))
}
else {
dat2 <- datzan
}
dat2$iter <- i
datzan <- datzan[-dat2$id2, ]
dat1 <- rbind(dat1, dat2)
}
dat1[, c("id2")] <- list(NULL)
dat1 <- rowid_to_column(dat1, var = "id2")
for (i in 1:j) {
val <- dat1[dat1$iter == i, ]
train.data <- dat1[-val$id2, ]
x <- train.data[train.data$result == 1, ]$x
y <- train.data[train.data$result == 1, ]$y
z <- train.data[train.data$result == 1, ]$z
train.data$t_distance <- 0
for (i3 in 1:nrow(train.data)) {
t_distance <- sqrt((x - train.data[i3]$x) * (x -
train.data[i3]$x) + (y - train.data[i3]$y) *
(y - train.data[i3]$y) + (z - train.data[i3]$z) *
(z - train.data[i3]$z))
t_distance <- sort(t_distance, decreasing = F)
if (train.data[i3]$result == 1) {
train.data[i3]$t_distance <- t_distance[2]
}
else {
train.data[i3]$t_distance <- t_distance[1]
}
}
glm <- glm(result ~ con + t_distance + b, train.data,
family = "binomial")
x <- train.data[train.data$result == 1, ]$x
y <- train.data[train.data$result == 1, ]$y
z <- train.data[train.data$result == 1, ]$z
val$t_distance <- 0
for (i3 in 1:nrow(val)) {
val[i3]$t_distance <- min(sqrt((x - val[i3]$x) *
(x - val[i3]$x) + (y - val[i3]$y) * (y - val[i3]$y) +
(z - val[i3]$z) * (z - val[i3]$z)))
}
f <- data.frame(ID = val$ID, result = val$result,
predict = predict(glm, newdata = val, type = "response"),
change = val$change, iter1 = i, iter2 = i2)
df <- rbind(df, f)
}
}
x <- D[D$result == 1, ]$x
y <- D[D$result == 1, ]$y
z <- D[D$result == 1, ]$z
D$t_distance <- 0
for (i3 in 1:nrow(D)) {
t_distance <- sqrt((x - D[i3]$x) * (x - D[i3]$x) + (y -
D[i3]$y) * (y - D[i3]$y) + (z - D[i3]$z) * (z - D[i3]$z))
t_distance <- sort(t_distance, decreasing = F)
if (D[i3]$result == 1) {
D[i3]$t_distance <- t_distance[2]
}
else {
D[i3]$t_distance <- t_distance[1]
}
}
for (i in 1:30) {
glm <- glm(result ~ con + t_distance + b, D, family = "binomial")
f <- data.frame(ID = final_data$ID, predict = predict(glm,
newdata = final_data, type = "response"), n = i)
fpredict <- rbind(fpredict, f)
}
options(warn = oldw)
fpredictb <- fpredict %>% group_by(ID) %>% summarise(MOVA_3d_distance_log_predict = mean(predict))
final_data <- merge(fpredictb, final_data)
fwrite(final_data, MOVA_final_predict_file)
df$iter3 <- df$iter1 + (df$iter2 * 5)
out <- cvAUC(df$predict, df$result, label.ordering = NULL,
folds = df$iter3)
plot(out$perf, col = "blue", avg = "vertical", add = TRUE)
cvauc <- out$cvAUC
YI2 <- data.frame(matrix(rep(NA, 5), nrow = 1))[numeric(0),
]
colnames(YI2) <- c("Cutoff", "positive_variant_num", "negative_variant_num",
"AUC", "cvauc")
for (i in 6:30) {
pred <- prediction(df[df$iter3 == i, ]$predict, df[df$iter3 ==
i, ]$result)
auc.tmp <- performance(pred, "auc")
auc <- as.numeric(auc.tmp@y.values)
tab <- data.frame(Cutoff = unlist(pred@cutoffs), TP = unlist(pred@tp),
FP = unlist(pred@fp), FN = unlist(pred@fn), TN = unlist(pred@tn),
Sensitivity = unlist(pred@tp)/(unlist(pred@tp) +
unlist(pred@fn)), Specificity = unlist(pred@tn)/(unlist(pred@fp) +
unlist(pred@tn)), Accuracy = ((unlist(pred@tp) +
unlist(pred@tn))/nrow(df)), Precision = (unlist(pred@tp)/(unlist(pred@tp) +
unlist(pred@fp))))
tab$Youden <- tab$Sensitivity + tab$Specificity - 1
YI <- tab[order(tab$Youden, decreasing = T), ]
YI <- data.frame(Cutoff = YI$Cutoff[1], positive_variant_num = c(nrow(df[(df$result ==
1) & (df$iter2 == 1), ])), negative_variant_num = c(nrow(df[(df$result ==
0) & (df$iter2 == 1), ])), AUC = c(auc), cvauc = c(cvauc))
YI2 <- rbind(YI2, YI)
}
fwrite(YI2, paste(protein_name, phenotype, "result_3d_distance_log.csv",
sep = "_"))
df2 <- df %>% group_by(ID) %>% summarise(MOVA_3d_distance_log_predict = mean(predict))
D[, c("result")] <- list(NULL)
fwrite(merge(D, df2), MOVA_predict_file)
fwrite(df, paste(protein_name, phenotype, "predict_orig_3d_distance_log.csv",
sep = "_"))
return(YI2)
}
#> function (protein_name, MOVA_final_predict_file, MOVA_predict_file,
#> phenotype = "Target")
#> {
#> D <- fread(MOVA_predict_file)
#> D$MOVA_3d_distance_log_predict <- 0
#> D[, c("MOVA_3d_distance_log_predict")] <- list(NULL)
#> if (phenotype == "Target") {
#> D <- D[(D$Type == "Target") | (D$Type == "Ctrl"), ]
#> }
#> fpredict <- data.frame(matrix(rep(NA, 3), nrow = 1))[numeric(0),
#> ]
#> colnames(fpredict) <- c("change", "predict", "n")
#> imp.rfa <- data.frame(matrix(rep(NA, 3), nrow = 1))[numeric(0),
#> ]
#> colnames(imp.rfa) <- c("name", "IncNodePurity", "n")
#> final_data <- fread(MOVA_final_predict_file)
#> final_data$MOVA_3d_distance_log_predict <- 0
#> final_data[, c("MOVA_3d_distance_log_predict")] <- list(NULL)
#> df <- data.frame(matrix(rep(NA, 6), nrow = 1))[numeric(0),
#> ]
#> colnames(df) <- c("ID", "re_result", "distance", "change",
#> "iter1", "iter2")
#> D$id2 <- 0
#> D[, c("id2")] <- list(NULL)
#> if (phenotype == "Target") {
#> D$result <- D$Type2
#> }
#> else {
#> D$result <- D$Type3
#> }
#> oldw <- getOption("warn")
#> options(warn = -1)
#> D <- rowid_to_column(D, var = "id2")
#> for (i2 in 1:5) {
#> D$id3 <- D$id2
#> j <- 5
#> dat1 <- D %>% stratified(., group = "result", size = 1/j)
#> dat1$iter <- 1
#> datzan <- D[-dat1$id2, ]
#> for (i in 2:j) {
#> datzan[, c("id2")] <- list(NULL)
#> datzan <- rowid_to_column(datzan, var = "id2")
#> if (i != j) {
#> dat2 <- datzan %>% stratified(., group = "result",
#> size = 1/(j - i + 1))
#> }
#> else {
#> dat2 <- datzan
#> }
#> dat2$iter <- i
#> datzan <- datzan[-dat2$id2, ]
#> dat1 <- rbind(dat1, dat2)
#> }
#> dat1[, c("id2")] <- list(NULL)
#> dat1 <- rowid_to_column(dat1, var = "id2")
#> for (i in 1:j) {
#> val <- dat1[dat1$iter == i, ]
#> train.data <- dat1[-val$id2, ]
#> x <- train.data[train.data$result == 1, ]$x
#> y <- train.data[train.data$result == 1, ]$y
#> z <- train.data[train.data$result == 1, ]$z
#> train.data$t_distance <- 0
#> for (i3 in 1:nrow(train.data)) {
#> t_distance <- sqrt((x - train.data[i3]$x) * (x -
#> train.data[i3]$x) + (y - train.data[i3]$y) *
#> (y - train.data[i3]$y) + (z - train.data[i3]$z) *
#> (z - train.data[i3]$z))
#> t_distance <- sort(t_distance, decreasing = F)
#> if (train.data[i3]$result == 1) {
#> train.data[i3]$t_distance <- t_distance[2]
#> }
#> else {
#> train.data[i3]$t_distance <- t_distance[1]
#> }
#> }
#> glm <- glm(result ~ con + t_distance + b, train.data,
#> family = "binomial")
#> x <- train.data[train.data$result == 1, ]$x
#> y <- train.data[train.data$result == 1, ]$y
#> z <- train.data[train.data$result == 1, ]$z
#> val$t_distance <- 0
#> for (i3 in 1:nrow(val)) {
#> val[i3]$t_distance <- min(sqrt((x - val[i3]$x) *
#> (x - val[i3]$x) + (y - val[i3]$y) * (y - val[i3]$y) +
#> (z - val[i3]$z) * (z - val[i3]$z)))
#> }
#> f <- data.frame(ID = val$ID, result = val$result,
#> predict = predict(glm, newdata = val, type = "response"),
#> change = val$change, iter1 = i, iter2 = i2)
#> df <- rbind(df, f)
#> }
#> }
#> x <- D[D$result == 1, ]$x
#> y <- D[D$result == 1, ]$y
#> z <- D[D$result == 1, ]$z
#> D$t_distance <- 0
#> for (i3 in 1:nrow(D)) {
#> t_distance <- sqrt((x - D[i3]$x) * (x - D[i3]$x) + (y -
#> D[i3]$y) * (y - D[i3]$y) + (z - D[i3]$z) * (z - D[i3]$z))
#> t_distance <- sort(t_distance, decreasing = F)
#> if (D[i3]$result == 1) {
#> D[i3]$t_distance <- t_distance[2]
#> }
#> else {
#> D[i3]$t_distance <- t_distance[1]
#> }
#> }
#> for (i in 1:30) {
#> glm <- glm(result ~ con + t_distance + b, D, family = "binomial")
#> f <- data.frame(ID = final_data$ID, predict = predict(glm,
#> newdata = final_data, type = "response"), n = i)
#> fpredict <- rbind(fpredict, f)
#> }
#> options(warn = oldw)
#> fpredictb <- fpredict %>% group_by(ID) %>% summarise(MOVA_3d_distance_log_predict = mean(predict))
#> final_data <- merge(fpredictb, final_data)
#> fwrite(final_data, MOVA_final_predict_file)
#> df$iter3 <- df$iter1 + (df$iter2 * 5)
#> out <- cvAUC(df$predict, df$result, label.ordering = NULL,
#> folds = df$iter3)
#> plot(out$perf, col = "blue", avg = "vertical", add = TRUE)
#> cvauc <- out$cvAUC
#> YI2 <- data.frame(matrix(rep(NA, 5), nrow = 1))[numeric(0),
#> ]
#> colnames(YI2) <- c("Cutoff", "positive_variant_num", "negative_variant_num",
#> "AUC", "cvauc")
#> for (i in 6:30) {
#> pred <- prediction(df[df$iter3 == i, ]$predict, df[df$iter3 ==
#> i, ]$result)
#> auc.tmp <- performance(pred, "auc")
#> auc <- as.numeric(auc.tmp@y.values)
#> tab <- data.frame(Cutoff = unlist(pred@cutoffs), TP = unlist(pred@tp),
#> FP = unlist(pred@fp), FN = unlist(pred@fn), TN = unlist(pred@tn),
#> Sensitivity = unlist(pred@tp)/(unlist(pred@tp) +
#> unlist(pred@fn)), Specificity = unlist(pred@tn)/(unlist(pred@fp) +
#> unlist(pred@tn)), Accuracy = ((unlist(pred@tp) +
#> unlist(pred@tn))/nrow(df)), Precision = (unlist(pred@tp)/(unlist(pred@tp) +
#> unlist(pred@fp))))
#> tab$Youden <- tab$Sensitivity + tab$Specificity - 1
#> YI <- tab[order(tab$Youden, decreasing = T), ]
#> YI <- data.frame(Cutoff = YI$Cutoff[1], positive_variant_num = c(nrow(df[(df$result ==
#> 1) & (df$iter2 == 1), ])), negative_variant_num = c(nrow(df[(df$result ==
#> 0) & (df$iter2 == 1), ])), AUC = c(auc), cvauc = c(cvauc))
#> YI2 <- rbind(YI2, YI)
#> }
#> fwrite(YI2, paste(protein_name, phenotype, "result_3d_distance_log.csv",
#> sep = "_"))
#> df2 <- df %>% group_by(ID) %>% summarise(MOVA_3d_distance_log_predict = mean(predict))
#> D[, c("result")] <- list(NULL)
#> fwrite(merge(D, df2), MOVA_predict_file)
#> fwrite(df, paste(protein_name, phenotype, "predict_orig_3d_distance_log.csv",
#> sep = "_"))
#> return(YI2)
#> }
#> <environment: 0x0000011a80a560d0>