Gene Combination Relationship
GET /api/genecombinations/219/relationships/genes?format=api
{
    "data": [
        {
            "type": "Gene",
            "id": "ARHGEF10"
        },
        {
            "type": "Gene",
            "id": "FAM126A"
        },
        {
            "type": "Gene",
            "id": "GRWD1"
        },
        {
            "type": "Gene",
            "id": "HEXB"
        },
        {
            "type": "Gene",
            "id": "ITPR1"
        },
        {
            "type": "Gene",
            "id": "MARS1"
        },
        {
            "type": "Gene",
            "id": "POLG2"
        },
        {
            "type": "Gene",
            "id": "SOD1"
        }
    ]
}