On May 18, 2026 Chugai Pharmaceutical Co., Ltd. (TOKYO: 4519) reported that it has obtained approval from the Ministry of Health, Labour and Welfare (MHLW) on March 9, 2026 for FoundationOneCDx Cancer Genomic Profile to be used as a companion diagnostic for Alecensa (generic name: alectinib), an anti-cancer agent/ALK inhibitor for ALK fusion gene-positive solid tumors.

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This approval enables the detection of ALK fusion gene using the FoundationOne CDx Cancer Genomic Profile to guide the decision to use Alecensa for ALK fusion gene-positive solid tumors. The efficacy and safety of Alecensa for advanced or recurrent ALK fusion gene-positive solid tumors were evaluated in an investigator initiated Japanese Phase II clinical study (TACKLE study), and an approval for a partial change to the marketing authorization was obtained on May 18, 2026.

FoundationOne CDx Cancer Genomic Profile has continuously expanded its tumor-agnostic companion diagnostic capabilities, enabling a single comprehensive genomic profiling test to support treatment plans for multiple medicines. With the addition of Alecensa as a companion diagnostic for ALK fusion gene-positive solid tumors, beyond its already approved use in non-small cell lung cancer, the potential treatment options for patients with solid tumors are expected to expand. As a leading company in oncology, Chugai is committed to realizing more advanced personalized healthcare in the oncology field and contributing to patients through the wider adoption of comprehensive genomic profiling.

Approval information The underlined and bolded part has been newly added.

Intended uses or indications

The product is used for comprehensive genomic profiling of tumor tissues in patients with solid cancers.
The product is used for detecting gene mutations and other alterations to support the assessment of drug indications listed in the table below.
Alterations Cancer type Relevant drugs
Activated EGFR alterations Non-small cell lung cancer (NSCLC) afatinib, erlotinib, gefitinib, osimertinib, dacomitinib
EGFR exon 20 T790M alterations osimertinib
ALK fusion genes alectinib, crizotinib, ceritinib, brigatinib
ROS1 fusion genes entrectinib
MET exon 14 skipping alterations capmatinib
BRAF V600E and V600K alterations Malignant melanoma dabrafenib, trametinib, vemurafenib, encorafenib, binimetinib
ERBB2 copy number alterations (HER2 gene amplification positive) Breast cancer trastuzumab
AKT1 alterations capivasertib
PIK3CA alterations
PTEN alterations
KRAS/NRAS wild-type Colorectal cancer cetuximab, panitumumab
Microsatellite instability high nivolumab
Microsatellite instability high Solid tumors pembrolizumab
Tumor mutational burden high pembrolizumab
NTRK1/2/3 fusion genes entrectinib, larotrectinib, repotrectinib
RET fusion genes selpercatinib
ALK fusion genes alectinib
BRCA1/2 alterations Ovarian cancer olaparib
BRCA1/2 alterations Prostate cancer olaparib, talazoparib
FGFR2 fusion genes Biliary tract cancer pemigatinib

(Press release, Chugai, MAY 18, 2026, View Source [SID1234665819])