Please assess the completion status of the following clinical trial:

Trial Title: Doxycycline in Treating Patients With Chronic Rhinosinusitis With Nasal Polyps

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE2
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Nasal polyps on nasal endoscopy.~* The patient has moderate to severe disease, defined by moderate to severe subjective symptoms (a score greater than 3 on a 10-cm VAS).~* The patient is at least 18 years old.~* The patient is able to understand and give informed consent.~* The patient has clinically diagnosed chronic rhinosinusitis with nasal polyps according to the AAO-HNS diagnostic criteria: At least 2 of the following symptoms/signs:~  * Mucopurulent drainage (anterior, posterior, or both)~ * Nasal obstruction (congestion)~ * Facial pain-pressure-fullness~ * Decreased sense of smell~ * and symptoms lasting 12 weeks or longer.~Exclusion Criteria:~* The patient has a history of treatment with oral corticosteroids in the past 4 weeks. ,~* The patient has cystic fibrosis.~* The patient has primary ciliary dyskinesia.~* The patient has diabetes.~* The patient has had sinus surgery in the past 3 months.~* The patient has an allergy to doxycycline or related tetracyclines or glucocorticoids.~* The patient is a minor.~* The patient is a prisoner.~* The patient has a psychiatric illness or developmental delay, which would interfere with understanding of the study and provision of informed consent.~* The patient is a breastfeeding mother. The effects of the drugs used in this study (doxycycline) on breast milk are unknown and thus, these patients will be excluded from the study~* The patient has a history of HIV or other known cause of immunosuppression, or is actively taking immunosuppressive medications due to organ transplantation, rheumatoid disease, or other medical conditions.~* The patient is on penicillin; antacids containing aluminum, calcium, magnesium, or iron; bismuth subsalicylate; barbiturates; carbamazepine; and phenytoin; as well as tetracycline and Penthane.~* Pregnancy. Doxycycline, a tetracycline, is a known teratogen. For this reason women of child-bearing potential are suggested to take a form of contraception for the duration that they are taking doxycycline., Should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately.~Pregnancy Testing. Women of childbearing potential are required to have a negative serum pregnancy test (with a sensitivity of at least 25 mIU/mL) prior to the first dose of drug. No further pregnancy tests are required since after this visit the patient will no longer be taking tetracycline after 3 weeks.~Women of childbearing potential are defined as follows:~* Patients with regular menses~* Patients with amenorrhea, irregular cycles, or using a contraceptive method that precludes withdrawal bleeding~* Women who have had a tubal ligation~Women are considered not to be of childbearing potential for the following reasons:~* The patient has undergone hysterectomy and/or bilateral oophorectomy.~* The patient is post-menopausal defined by amenorrhea for at least 1 year in a woman \> 45 years old.

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

Study Arms:
- Doxycycline (Type: EXPERIMENTAL): Doxycycline plus oral methylprednisolone and nasal saline sprays
- Sugar pill (Type: PLACEBO_COMPARATOR): placebo pill plus oral methylprednisolone for three weeks. After this, maintenance therapy which includes nasal saline sprays and daily nasal steroid sprays.

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