A Study of PHST001 in Advanced Solid Tumors
A Study of PHST001 in Advanced Solid Tumors
PHST001-101 is a multicenter, open-label, Phase 1 study of PHST001 in patients with advanced solid tumors. The study design includes a Dose Escalation Phase and a Dose Expansion Phase, and will enroll patients with advanced relapsed and/or refractory solid tumors. The study's primary object is to evaluate the safety and tolerability of PHST001 and determine the RP2D (Recommended Phase 2 dose) of PHST001.
Miscellaneous
Phase I
Adults
Not Available
PHST001
Davis, Elizabeth
National
Vanderbilt University
09-24-2025
Eligibility
18 Years and older
ALL
false
Inclusion Criteria:
Histologically or cytologically confirmed advanced solid tumor which has relapsed from or been refractory to all locally available standard therapies.
Adequate hepatic function:
AST and ALT 2.5 times ULN ( 5 ULN if liver metastases)
Total bilirubin 1.5 ULN (3 ULN for patients with elevations due to Gilbert syndrome)
Lipase and amylase 2ULN
Adequate renal function: calculated creatinine clearance of 30 mL/min calculated per institutional standard
Adequate bone marrow function without packed RBC transfusion within the prior 2 weeks. Patients can be on a stable dose of erythropoietin (approximately 3 months). Criteria must be met without platelet transfusion within 7 days of screening blood draw:
Absolute neutrophil count (ANC) 1,500/L
Platelet count 100,000/L
Hemoglobin 9.0 g/dL or 5.6 mmol/La
Exclusion Criteria:
History of a previous additional malignancy, unless potentially curative treatment has been completed, with no evidence of malignancy for 5 years. Patients with basal cell carcinoma of the skin, Stage I melanoma, melanoma in situ, squamous cell carcinoma of the skin, early-stage prostate cancer, or carcinoma in situ, excluding carcinoma in situ of the bladder, who have undergone potentially curative therapy are not excluded and can be enrolled regardless of disease-free period following completion of potentially curative therapy. Patients with early-stage breast cancer who have undergone curative intent treatment and with no disease recurrence for 2 years after treatment are not excluded.
Active known CNS metastases and/or carcinomatous meningitis. Patients with previously treated CNS metastases may participate provided they are radiologically stable (ie, without evidence of progression for at least 2 weeks by repeat imaging \[note that the repeat imaging should be performed during study screening\]), clinically stable, and without requirement of steroid treatment for at least 14 days prior to the first dose of study treatment.
Received prior systemic anticancer therapy including investigational agents within 21 days or, if shorter, within 5 half-lives prior to the first dose of study treatment. Patients must have recovered from all AEs due to previous therapies to Grade 1 or baseline. Patients with Grade 2 neuropathy may be eligible. Patients with endocrine-related AEs Grade 2 requiring treatment or hormone replacement may be eligible.
Prior autologous or allogeneic hematopoietic stem cell transplant or solid organ transplant.
Received previous treatment with another agent targeting CD24.
Histologically or cytologically confirmed advanced solid tumor which has relapsed from or been refractory to all locally available standard therapies.
Adequate hepatic function:
AST and ALT 2.5 times ULN ( 5 ULN if liver metastases)
Total bilirubin 1.5 ULN (3 ULN for patients with elevations due to Gilbert syndrome)
Lipase and amylase 2ULN
Adequate renal function: calculated creatinine clearance of 30 mL/min calculated per institutional standard
Adequate bone marrow function without packed RBC transfusion within the prior 2 weeks. Patients can be on a stable dose of erythropoietin (approximately 3 months). Criteria must be met without platelet transfusion within 7 days of screening blood draw:
Absolute neutrophil count (ANC) 1,500/L
Platelet count 100,000/L
Hemoglobin 9.0 g/dL or 5.6 mmol/La
Exclusion Criteria:
History of a previous additional malignancy, unless potentially curative treatment has been completed, with no evidence of malignancy for 5 years. Patients with basal cell carcinoma of the skin, Stage I melanoma, melanoma in situ, squamous cell carcinoma of the skin, early-stage prostate cancer, or carcinoma in situ, excluding carcinoma in situ of the bladder, who have undergone potentially curative therapy are not excluded and can be enrolled regardless of disease-free period following completion of potentially curative therapy. Patients with early-stage breast cancer who have undergone curative intent treatment and with no disease recurrence for 2 years after treatment are not excluded.
Active known CNS metastases and/or carcinomatous meningitis. Patients with previously treated CNS metastases may participate provided they are radiologically stable (ie, without evidence of progression for at least 2 weeks by repeat imaging \[note that the repeat imaging should be performed during study screening\]), clinically stable, and without requirement of steroid treatment for at least 14 days prior to the first dose of study treatment.
Received prior systemic anticancer therapy including investigational agents within 21 days or, if shorter, within 5 half-lives prior to the first dose of study treatment. Patients must have recovered from all AEs due to previous therapies to Grade 1 or baseline. Patients with Grade 2 neuropathy may be eligible. Patients with endocrine-related AEs Grade 2 requiring treatment or hormone replacement may be eligible.
Prior autologous or allogeneic hematopoietic stem cell transplant or solid organ transplant.
Received previous treatment with another agent targeting CD24.
