Hi,
I have a set of ~150 gene and I want to obtain a list of phenotypes (diseases or conditions) they are associated with. I was wondering what is the way to do this in OMIM in a batch manner. Eg., 

Gene       Condition

BRCA1    Breast Cancer

Thanks for your help!
If you are willing to use R and biomaRt:

    gene_mart <- biomaRt::useEnsembl(biomart = "ENSEMBL_MART_ENSEMBL", 
                                     host = "www.ensembl.org", 
                                     dataset = "hsapiens_gene_ensembl")

    biomaRt::getBM(mart = gene_mart,
                   attributes = c("hgnc_symbol", "mim_morbid_accession", "mim_morbid_description"),
                   filters = "hgnc_symbol",
                   values = c("BRCA1"),
                   uniqueRows = TRUE)

This will give the following output:

    hgnc_symbol mim_morbid_accession    mim_morbid_description
    BRCA1               114480     BREAST CANCER;;BREAST CANCER, FAMILIALBREAST CANCER, FAMILIAL MALE, INCLUDED
    BRCA1               604370     BREAST-OVARIAN CANCER, FAMILIAL, SUSCEPTIBILITY TO, 1; BROVCA1BREAST CANCER, FAMILIAL, SUSCEPTIBILITY TO, 1, INCLUDED;;OVARIAN CANCER, FAMILIAL, SUSCEPTIBILITY TO, 1, INCLUDED
    BRCA1               614320    PANCREATIC CANCER, SUSCEPTIBILITY TO, 4; PNCA4
    BRCA1               617883    FANCONI ANEMIA, COMPLEMENTATION GROUP S; FANCS
 

If you want more than one gene, you just have to write all your hgnc symbols in the *values* parameter, example with 2 genes:

    biomaRt::getBM(mart = gene_mart,
                   attributes = c("hgnc_symbol", "mim_morbid_accession", "mim_morbid_description"),
                   filters = "hgnc_symbol",
                   values = c("BRCA1", "FOXP3"),
                   uniqueRows = TRUE)


This script will get the omim IDs and descriptions filtered by hgnc symbols. If you prefer to use ensembl gene IDs you can replace *filters = "hgnc_symbol"* by *filters = "ensembl_gene_id"*. For more information you can refer to the biomaRt user guide at https://www.bioconductor.org/packages/devel/bioc/vignettes/biomaRt/inst/doc/biomaRt.html