Patient description: The patient is a 47-year-old Asian woman complaining of persistent feelings of sadness. She lost interest in activities she used to enjoy. She states that her mood is mostly depressed for the past 3 weeks. She also lost her appetite , which led to about 5kg weight loss. She complains of loss of energy and feelings of worthlessness nearly every day. She is not using any drugs and she does not smoke. She doesn't drink alcohol. She used to exercise every day for at least 30 min. But she doesn't have enough energy to do so for the past 3 weeks. She also has some digestive issues recently. She is married and has 4 children. She is menopausal. Her husband was recently diagnosed with colon cancer and he is starting his chemotherapy. There is nothing remarkable in her past medical history and her drug history is only positive for Vit D3 1000 units daily. Her family history is negative for any psychologic problems. Her HAM-D score is 20.

Clinical trial eligibility criteria: eligible ages (years): 18.0-999.0,  Metastatic Ureter Carcinoma Metastatic Urethral Carcinoma Stage III Bladder Urothelial Carcinoma AJCC v6 and v7 Stage III Ureter Cancer AJCC v7 Stage III Urethral Cancer AJCC v7 Stage IV Bladder Urothelial Carcinoma AJCC v7 Stage IV Ureter Cancer AJCC v7 Stage IV Urethral Cancer AJCC v7 Ureter Urothelial Carcinoma Urethral Urothelial Carcinoma Patients must have locally advanced or metastatic predominantly urothelial carcinoma of the bladder, ureter, or urethra that is not amenable to curative surgical treatment Patients must have histologically confirmed predominantly urothelial carcinoma of the bladder, ureter, or urethra Patients must have measurable disease per Response Evaluation in Solid Tumors (RECIST) defined as at least one lesion that can be accurately measured in at least one dimension (longest diameter to be recorded for non-nodal lesions and short axis for nodal lesions) as >= 20 mm with conventional techniques or as >= 10 mm with spiral computed tomography (CT) scan, magnetic resonance imaging (MRI), or calipers by clinical exam Patients must be ineligible for treatment with cisplatin, based on one of Calculated creatinine clearance (CrCl) >= 30 and < 60 mL/min (Cockcroft-Gault) CTCAE grade (Gr) >= 2 hearing loss CTCAE Gr >= 2 neuropathy Patients must not have received prior systemic therapy for their advanced cancer; prior intravesical therapy completed 4 weeks prior to enrollment and adjuvant/neoadjuvant chemotherapy completed more than 6 months prior to diagnosis of advanced disease are permitted Zubrod performance status =< 2 (Karnofsky >= 60%) Life expectancy of greater than 3 months  Patients with a small cell component in their histology are excluded Patients who have had chemotherapy for the treatment of the advanced or unresectable urothelial cancer of the bladder are not eligible; patients who were previously treated for local disease must not have received radiotherapy or chemotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study and must have recovered from adverse events due to agents administered more than 4 weeks earlier; patients who have received neoadjuvant or adjuvant chemotherapy must have completed treatment at least 6 months prior to diagnosis of metastatic disease Patients who are receiving any other investigational agents Patients with known brain metastases should be excluded from this clinical trial History of allergic reactions attributed to compounds of similar chemical or biologic composition to gemcitabine and eribulin Uncontrolled intercurrent illness including, but not limited to, a second cancer diagnosis within the past 5 years, or a cancer undergoing any treatment, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements Pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is treated with eribulin and gemcitabine Human immunodeficiency virus (HIV)-positive patients with inadequate cluster of differentiation (CD)4 counts or those who are on combination antiretroviral therapy with strong cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) effects are ineligible for this trial Patients with baseline corrected QT (QTc) prolongation greater than grade 1 are excluded from this study; patients with grade 1 QTc elevation are eligible but must be monitored with electrocardiogram (ECG) (EKG) exams, for the first 3 cycles of treatment; eribulin time to maximum concentration (Cmax) after infusion is about 10 minutes, and half life is 40 minutes; ECG (EKG) should be performed between 10 to 40 minutes after eribulin administration (on day 1 and day 8 of treatment); continued ECG (EKG) monitoring beyond cycle 3 can be done at the discretion of the treating physician Patients with congenital long QT syndrome are excluded from this study