I'd give it a try. A friend who imagined that I understood plants asked me to rescue a rose like that which she valued very highly.(Though not enough to care for it properly.) I potted it up in rose compost, cut off the dead bits, kept it in good light but not hot sunlight and watered it very carefully. NO feed. To my utter amazement, it grew bright new leaves and actually flowered before the summer was done.
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If it is, then prune the dead bits, feed it and hope for the best