Neratinib and Capmatinib Combination (Phase Ib/II) in Metastatic Breast Cancer and Inflammatory Breast Cancer Patients With Abnormal HER2 and c-Met Pathway Activity as Measured by the CELsignia Signaling Analysis Test

Inclusion Criteria

Signed Informed Consent Form (ICF) and comply with the requirements of the study protocol
Age 18 years
ECOG performance status 0-1

Confirmed diagnosis of metastatic breast cancer or inflammatory breast cancer according to international consensus criteria30:

Onset: Rapid onset of breast erythema, edema, and/or peau d'orange, and/or warm breast, with or without an underlying breast mass
Duration: History of such findings no more than 6 months
Extent: Erythema occupying at least 1/3 of whole breast
Pathology: Pathologic confirmation of invasive carcinoma
Patients with metastatic or recurrent IBC which is not amenable to curative treatment with available local and systemic therapy or metastatic non-IBC after 1-6 lines of therapies for metastatic disease with at least 2 weeks washout period before the initiation of study treatment.
For Phase Ib, any ER, PR, and HER2 status, For Phase 2, HER2-negative per ASCO guidelines and any ER and PR status.
For Phase II only, Patients with measurable disease according to the Response Evaluation Criteria in Solid Tumor (RECIST, v1.1) (local or distant) and at least one metastatic lesion amendable for biopsy (core or punch)
Left Ventricular Ejection Fraction ≥ 50% measured by MUGA scan or Echocardiogram.
Abnormal HER2 and c-Met signaling activity based on CELsignia MP Test results (for phase II patients only).

Participants must have adequate organ function including the following laboratory values at the screening visit. Screening must occur within 28 days prior to the first dose of study drug. Screening samples for hematology and serum chemistries must be drawn within 14 days prior to the first dose of study drug

Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without growth factor support Platelets (PLT) >= 75 x 10^9/L
Hemoglobin (Hgb) >= 9 g/dL ( Calculated creatinine clearance (using Cockcroft-Gault formula) >= 45 mL/min
Total bilirubin (TBIL) =< ULN (upper limit of normal) with the following exception: Patients with known Gilbert disease who have serum bilirubin level =< 3 x ULN may be enrolled Aspartate transaminase (AST) =< 3 x ULN, except for participants with liver metastasis, who may only be included if AST =< 5 x ULN
Alanine transaminase (ALT) =< 3 x ULN, except for participants with liver metastasis, who may only be included if ALT =< 5 x ULN Alkaline phosphatase (ALP) =< 5.0 x ULN
Asymptomatic serum amylase =< grade 2. Participants with grade 1 or grade 2 serum amylase at the beginning of the study must be confirmed to have no signs and/or symptoms suggesting pancreatitis or pancreatic injury (e.g., elevated P-amylase, abnormal imaging findings of pancreas, etc.) Serum lipase =< ULN
Willing and able to comply with scheduled visits, treatment plan and laboratory tests

Exclusion Criteria:

Concurrent anticancer therapy within 2 weeks of initiation of study treatment; except:
Unstable and symptomatic brain metastasis (Stable disease is defined as CNS radiographic study 4 weeks from completion of radiotherapy and 2 weeks from discontinuation of corticosteroids)

Adverse events from prior anticancer therapy that have not resolved to Grade 1 (CTCAE v 5.0) except for alopecia, vitiligo, pain, constipation, diarrhea, or fatigue if these symptoms existed during screening baseline.

i. Grade 3 or above neuropathy induced from prior treatment, that is not resolved to grade 2 or below despite best supportive care

Known clinically significant liver disease, including active viral, alcoholic, or other hepatitis; cirrhosis
Acute exacerbations of underlying condition within the last 12 months (requiring psoralen plus ultraviolet A radiation [PUVA], methotrexate, retinoids, biologic agents, oral calcineurin inhibitors; high potency or oral steroids)
Patients with known HIV infection: 1) CD4+ count<350 cells/uL; or 2) had AIDS-defining opportunistic infections < 12 months
Know active hepatitis B (chronic or acute) or hepatitis C infection:
Severe infections within 4 weeks prior to study treatment, including but not limited to hospitalization for complications of infection, bacteremia, or severe pneumonia
Signs or symptoms of infection within 2 weeks prior to study treatment per treating physician and PI judgement.

Concurrent oral or IV antibiotics within 5 days prior to study treatment

* Patients receiving prophylactic antibiotics (e.g., for prevention of a urinary tract infection or chronic obstructive pulmonary disease) are allowed and eligible so long as the antibiotic is not prohibited with the study medication (See Tables 8 and 10).

Major surgical procedure within 28 days prior to study treatment or anticipation of need for a major surgical procedure during the course of the study
Presence or history of interstitial lung disease or interstitial pneumonitis, including clinically significant radiation pneumonitis (i.e., affecting activities of daily living or requiring therapeutic intervention).
Long QT syndrome, family history of idiopathic sudden death or congenital long QT syndrome

Clinically significant, uncontrolled heart diseases.

Unstable angina within 6 months prior to screening
Myocardial infarction within 6 months prior to screening
History of documented congestive heart failure (New York Heart Association functional classification III-IV)
Uncontrolled hypertension defined by a Systolic Blood Pressure (SBP) ≥ 160 mm Hg and/or Diastolic Blood Pressure (DBP) ≥ 100 mm Hg, with or without antihypertensive medication. Initiation or adjustment of antihypertensive medication(s) is allowed prior to screening
Ventricular arrhythmias
Supraventricular and nodal arrhythmias not controlled with medication
Other cardiac arrhythmia not controlled with medication
QTcF (QT interval corrected by Fridericia's formula) ≥ 470 ms on the screening ECG (as mean of triplicate ECG)
Major surgery (e.g., intra-thoracic, intra-abdominal or intra-pelvic) within 4 weeks prior (2 weeks for resection of brain metastases) to starting capmatinib or who have not recovered from side effects of such procedure.
Unable to swallow or absorb study drug capmatinib due to impairment of GI function or GI disease e.g., ulcerative diseases, uncontrolled nausea, vomiting, diarrhea, or malabsorption syndrome
Participants receiving treatment with any enzyme-inducing anticonvulsant that cannot be discontinued at least 1 week before first dose of capmatinib, and for the duration of the study.
Other severe, acute, or chronic medical or psychotic conditions, substance abuse or laboratory abnormalities that in the opinion of the investigator may increase the risk associated with study participation, or that may interfere with the interpretation of study results
Pregnant or nursing (lactating) women

Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using highly effective methods of contraception during dosing and for one month after stopping treatment. Highly effective contraception methods include:

Total abstinence (when this is in line with the preferred and usual lifestyle of the subject. Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception
Female sterilization (have had surgical bilateral oophorectomy with or without hysterectomy) total hysterectomy, or tubal ligation at least six weeks before taking study treatment. In case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment
Male sterilization (at least 6 months prior to screening). For female subjects on the study, the vasectomized male partner should be the sole partner for that subject
Use of oral, injected or implanted hormonal methods of contraception or placement of an intrauterine device (IUD) or intrauterine system (IUS), or other forms of hormonal contraception that have comparable efficacy (failure rate <1%), for example hormone vaginal ring or transdermal hormone contraception. In case of use of oral contraception women should have been stable on the same pill for a minimum of 3 months before taking study treatment.
Sexually active males will not be eligible unless they use a condom during intercourse while taking drug and for 3 months after stopping treatment and should not father a child in this period. A condom is required for all sexually active male to prevent them from fathering a child AND to prevent delivery of study treatment via seminal fluid to partner. In addition, male participants must not donate sperm for the time period specified above
Participants receiving treatment with the following medications that cannot be discontinued at least 1 week prior to the start of treatment with study therapy and for the duration of the study: