Please assess the completion status of the following clinical trial:

Trial Title: Pharmacodynamic Biomarkers of Standard Anti-microtubule Drugs as Assessed by Early Tumor Biopsy

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Men and women with histologically or cytologically demonstrated breast cancer that is deemed metastatic or incurable by the treating physician.~* It is medically appropriate to treat the patient with an antimitotic agent or an intravenous control chemotherapeutic agent by IV infusion at standard doses as per the treating physician. Please see NCCN guidelines for standard of care, p58 for standard chemotherapy regimens for recurrent or metastatic breast cancer7.~* The patient has measureable disease as determined by RECIST 1.1.~* Archived tissue is available from either primary, metastatic site or both.~* It is safe and feasible to obtain a research tumor biopsy on cycle 1 day 2 with a biopsy of an accessible lesion such as liver, lung, lymph node, skin, breast, or bone.~* All pre-chemotherapy test results (tests per treating oncologist discretion) have been reviewed and deemed appropriate for planned chemotherapy by the patient's treating oncologist.~Exclusion Criteria:~* HER2+ breast cancer by standard criteria.~* Pregnant women are excluded from this study because systemic chemotherapy may cause deleterious effects to the fetus. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother with systemic chemotherapy, breastfeeding should be discontinued if the mother is enrolled in the trial.~* Planned treatment with hormonal therapy, or targeted oral therapy during trial enrollment.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Taxane (nab-paclitaxel or paclitaxel) (Type: None): Up to 10 participants will be enrolled on the Taxane arm. The dose and schedule of administration is determined by the treating physician. The first dose will be coordinated in conjunction with research staff who will schedule a research biopsy to be completed on Day 2 of the first planned chemotherapy treatment cycle (C1D2). Participants are not eligible for replacement as long as they are able to have the C1D2 biopsy completed.~Two tubes of blood of up to 15ml each drawn prior to chemotherapy and again just before or after research biopsy on C1D2. A 15ml sample of blood drawn at the time subject comes off study or at the time of disease progression.~Tumor core biopsy is obtained as close as possible to 20 hours following initiation of the first planned treatment infusions. Between 2 and 4 cores will be obtained for research biopsy.
- Eribulin (Type: None): Up to 5 participants will be enrolled on the Eribulin arm. The dose and schedule of administration is determined by the treating physician. The first dose will be coordinated in conjunction with research staff who will schedule a research biopsy to be completed on Day 2 of the first planned chemotherapy treatment cycle (C1D2). Participants are not eligible for replacement as long as they are able to have the C1D2 biopsy completed.~Two tubes of blood of up to 15ml each drawn prior to chemotherapy and again just before or after research biopsy on C1D2. A 15ml sample of blood drawn at the time subject comes off study or at the time of disease progression.~Tumor core biopsy is obtained as close as possible to 20 hours following initiation of the first planned treatment infusions. Between 2 and 4 cores will be obtained for research biopsy.
- Vinorelbine (Type: None): Up to 5 participants will be enrolled on the Vinorelbine arm. TThe dose and schedule of administration is determined by the treating physician. The first dose will be coordinated in conjunction with research staff who will schedule a research biopsy to be completed on Day 2 of the first planned chemotherapy treatment cycle (C1D2). Participants are not eligible for replacement as long as they are able to have the C1D2 biopsy completed.~Two tubes of blood of up to 15ml each drawn prior to chemotherapy and again just before or after research biopsy on C1D2. A 15ml sample of blood drawn at the time subject comes off study or at the time of disease progression.~Tumor core biopsy is obtained as close as possible to 20 hours following initiation of the first planned treatment infusions. Between 2 and 4 cores will be obtained for research biopsy.
- Ixabepilone (Type: None): Up to 5 participants will be enrolled on the Ixabepilone arm. The dose and schedule of administration is determined by the treating physician. The first dose will be coordinated in conjunction with research staff who will schedule a research biopsy to be completed on Day 2 of the first planned chemotherapy treatment cycle (C1D2). Participants are not eligible for replacement as long as they are able to have the C1D2 biopsy completed.~Two tubes of blood of up to 15ml each drawn prior to chemotherapy and again just before or after research biopsy on C1D2. A 15ml sample of blood drawn at the time subject comes off study or at the time of disease progression.~Tumor core biopsy is obtained as close as possible to 20 hours following initiation of the first planned treatment infusions. Between 2 and 4 cores will be obtained for research biopsy.
- Control Arm (Type: None): Up to 10 participants will be enrolled on the control arm. The dose and schedule of administration is determined by the treating physician. The first dose will be coordinated in conjunction with research staff who will schedule a research biopsy to be completed on Day 2 of the first planned chemotherapy treatment cycle (C1D2). Participants are not eligible for replacement as long as they are able to have the C1D2 biopsy completed.~Two tubes of blood of up to 15ml each drawn prior to chemotherapy and again just before or after research biopsy on C1D2. A 15ml sample of blood drawn at the time subject comes off study or at the time of disease progression.~Tumor core biopsy is obtained as close as possible to 20 hours following initiation of the first planned treatment infusions. Between 2 and 4 cores will be obtained for research biopsy.

Based on this trial design, predict the completion outcome and termination type (if applicable).

Answer: outcome: terminate
termination_type: enrollment issues