Available parameters and response documentation is available here

GET /lookup/TP53:R175L
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json ;utf-8
ETag: "33830cabb1d87e44e98c7897994322db540b32bf41c3239cbd2b00eacafe14fc"
Vary: Accept

{
  "chromosome": "chr17",
  "alt": "A",
  "ref": "C",
  "pos": 7578406,
  "variant_id": "10190170075784060001",
  "variant_type": "SNV",
  "cytobands": "17p13.1",
  "publications": {
    "publications": [],
    "genes": []
  },
  "publication_counts": [
    {
      "type": "variant",
      "id": "10190170075784060001",
      "count": 75
    }
  ]
}