diff --git a/frontend/src/api/autoacmg/client.spec.ts b/frontend/src/api/autoacmg/client.spec.ts
index e69de29b..fcd9150e 100644
--- a/frontend/src/api/autoacmg/client.spec.ts
+++ b/frontend/src/api/autoacmg/client.spec.ts
@@ -0,0 +1,77 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest'
+import createFetchMock from 'vitest-fetch-mock'
+
+import AUTOACMG_SEQVAR_RESULT from './brca1_seqvar.json'
+import { AutoACMGClient } from './client'
+
+const fetchMocker = createFetchMock(vi)
+
+describe('AutoACMGClient', () => {
+  beforeEach(() => {
+    fetchMocker.enableMocks()
+    fetchMocker.resetMocks()
+  })
+
+  it('should be created', () => {
+    const client = new AutoACMGClient()
+    expect(client).toBeDefined()
+  })
+
+  it('should classify a sequence variant', async () => {
+    fetchMocker.mockResponseOnce(JSON.stringify(AUTOACMG_SEQVAR_RESULT))
+
+    const client = new AutoACMGClient()
+    const result = await client.classifySequenceVariant({
+      genomeBuild: 'grch37',
+      chrom: '17',
+      pos: 41245466,
+      del: 'G',
+      ins: 'A',
+      userRepr: 'GRCh37-17-41245466-G-A'
+    })
+
+    expect(result).toEqual(AUTOACMG_SEQVAR_RESULT)
+    expect(fetchMocker).toHaveBeenCalledTimes(1)
+    expect(fetchMocker).toHaveBeenCalledWith(
+      'http://localhost:8080/api/v1/proxy/autoacmg/api/v1/predict/seqvar?variant_name=chr17:41245466:G:A&genome_release=grch37',
+      expect.objectContaining({
+        method: 'GET',
+        headers: {
+          'Content-Type': 'application/json'
+        }
+      })
+    )
+  })
+
+  it('should throw an error for non-200 response', async () => {
+    fetchMocker.mockResponseOnce(JSON.stringify({ error: 'Not found' }), { status: 404 })
+
+    const client = new AutoACMGClient()
+    await expect(
+      client.classifySequenceVariant({
+        genomeBuild: 'grch37',
+        chrom: '17',
+        pos: 41245466,
+        del: 'G',
+        ins: 'A',
+        userRepr: 'GRCh37-17-41245466-G-A'
+      })
+    ).rejects.toThrow('HTTP error! status: 404')
+  })
+
+  it('should throw an error for invalid JSON response', async () => {
+    fetchMocker.mockResponseOnce('Invalid JSON')
+
+    const client = new AutoACMGClient()
+    await expect(
+      client.classifySequenceVariant({
+        genomeBuild: 'grch37',
+        chrom: '17',
+        pos: 41245466,
+        del: 'G',
+        ins: 'A',
+        userRepr: 'GRCh37-17-41245466-G-A'
+      })
+    ).rejects.toThrow()
+  })
+})